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2839397797 = 3776740481
BaseRepresentation
bin1010100100111101…
…1100010110100101
321022212211100112101
42221033130112211
521303341212142
61145430052101
7130235324455
oct25117342645
97285740471
102839397797
111227847655
12672aaa031
13363342952
141cd15bd65
1511941d0b7
hexa93dc5a5

2839397797 has 4 divisors (see below), whose sum is σ = 2916138316. Its totient is φ = 2762657280.

The previous prime is 2839397767. The next prime is 2839397819. The reversal of 2839397797 is 7977939382.

It is a Cunningham number, because it is equal to 532862+1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2540764836 + 298632961 = 50406^2 + 17281^2 .

It is a cyclic number.

It is not a de Polignac number, because 2839397797 - 227 = 2705180069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2839397767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38370204 + ... + 38370277.

It is an arithmetic number, because the mean of its divisors is an integer number (729034579).

Almost surely, 22839397797 is an apocalyptic number.

It is an amenable number.

2839397797 is a deficient number, since it is larger than the sum of its proper divisors (76740519).

2839397797 is an equidigital number, since it uses as much as digits as its factorization.

2839397797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76740518.

The product of its digits is 36006768, while the sum is 64.

The square root of 2839397797 is about 53286.0000093833. Note that the first 5 decimals coincide. The cubic root of 2839397797 is about 1416.0396488214.

The spelling of 2839397797 in words is "two billion, eight hundred thirty-nine million, three hundred ninety-seven thousand, seven hundred ninety-seven".

Divisors: 1 37 76740481 2839397797