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389046901 = 2271713863
BaseRepresentation
bin10111001100000…
…110001001110101
31000010001122000111
4113030012021311
51244044000101
6102334343021
712432562345
oct2714061165
91003048014
10389046901
1118a674771
12aa35aa71
13627a7c89
1439952d25
152424d251
hex17306275

389046901 has 4 divisors (see below), whose sum is σ = 390760992. Its totient is φ = 387332812.

The previous prime is 389046893. The next prime is 389046937. The reversal of 389046901 is 109640983.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 389046901 - 23 = 389046893 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389046941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 856705 + ... + 857158.

It is an arithmetic number, because the mean of its divisors is an integer number (97690248).

Almost surely, 2389046901 is an apocalyptic number.

It is an amenable number.

389046901 is a deficient number, since it is larger than the sum of its proper divisors (1714091).

389046901 is a wasteful number, since it uses less digits than its factorization.

389046901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1714090.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 389046901 is about 19724.2718750275. The cubic root of 389046901 is about 730.0187028423.

The spelling of 389046901 in words is "three hundred eighty-nine million, forty-six thousand, nine hundred one".

Divisors: 1 227 1713863 389046901