38039657 has 4 divisors (see below), whose sum is σ = 38060160. Its totient is φ = 38019156.

The previous prime is 38039641. The next prime is 38039669. The reversal of 38039657 is 75693083.

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, and also an emirpimes, since its reverse is a distinct semiprime: 75693083 = 37 ⋅2045759.

It is a cyclic number.

It is not a de Polignac number, because 38039657 - 2⁴ = 38039641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38039627) 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, 7157 + ... + 11282.

It is an arithmetic number, because the mean of its divisors is an integer number (9515040).

Almost surely, 2^38039657 is an apocalyptic number.

It is an amenable number.

38039657 is a deficient number, since it is larger than the sum of its proper divisors (20503).

38039657 is a wasteful number, since it uses less digits than its factorization.

38039657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20502.

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 38039657 is about 6167.6297716384. The cubic root of 38039657 is about 336.3144525270.

The spelling of 38039657 in words is "thirty-eight million, thirty-nine thousand, six hundred fifty-seven".