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83090807 = 139959393
BaseRepresentation
bin1001111001111…
…01110101110111
312210100110011022
410330331311313
5132232401212
612124531355
72026155152
oct474756567
9183313138
1083090807
11429a2398
12239b0b5b
13142a3177
14b06cc99
157464772
hex4f3dd77

83090807 has 4 divisors (see below), whose sum is σ = 83151600. Its totient is φ = 83030016.

The previous prime is 83090801. The next prime is 83090827. The reversal of 83090807 is 70809038.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70809038 = 235404519.

It is a cyclic number.

It is not a de Polignac number, because 83090807 - 214 = 83074423 is a prime.

It is a super-2 number, since 2×830908072 = 13808164415822498, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83090801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28298 + ... + 31095.

It is an arithmetic number, because the mean of its divisors is an integer number (20787900).

Almost surely, 283090807 is an apocalyptic number.

83090807 is a deficient number, since it is larger than the sum of its proper divisors (60793).

83090807 is a wasteful number, since it uses less digits than its factorization.

83090807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60792.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 83090807 is about 9115.4158983559. The cubic root of 83090807 is about 436.3660881031.

The spelling of 83090807 in words is "eighty-three million, ninety thousand, eight hundred seven".

Divisors: 1 1399 59393 83090807