38900657 has 4 divisors (see below), whose sum is σ = 40948080. Its totient is φ = 36853236.

The previous prime is 38900639. The next prime is 38900671. The reversal of 38900657 is 75600983.

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 de Polignac number, because none of the positive numbers 2^k-38900657 is a prime.

It is a super-2 number, since 2×38900657² = 3026522230063298, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 38900657.

It is not an unprimeable number, because it can be changed into a prime (38900557) 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, 1023683 + ... + 1023720.

It is an arithmetic number, because the mean of its divisors is an integer number (10237020).

Almost surely, 2^38900657 is an apocalyptic number.

It is an amenable number.

38900657 is a deficient number, since it is larger than the sum of its proper divisors (2047423).

38900657 is a wasteful number, since it uses less digits than its factorization.

38900657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2047422.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 38900657 is about 6237.0391212498. The cubic root of 38900657 is about 338.8329566305.

The spelling of 38900657 in words is "thirty-eight million, nine hundred thousand, six hundred fifty-seven".