38697939 has 16 divisors (see below), whose sum is σ = 65520640. Its totient is φ = 22113000.

The previous prime is 38697917. The next prime is 38697947. The reversal of 38697939 is 93979683.

It is not a de Polignac number, because 38697939 - 2⁸ = 38697683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38697959) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102187 + ... + 102564.

It is an arithmetic number, because the mean of its divisors is an integer number (4095040).

Almost surely, 2^38697939 is an apocalyptic number.

38697939 is a deficient number, since it is larger than the sum of its proper divisors (26822701).

38697939 is a wasteful number, since it uses less digits than its factorization.

38697939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204767 (or 204761 counting only the distinct ones).

The product of its digits is 2204496, while the sum is 54.

The square root of 38697939 is about 6220.7667533834. The cubic root of 38697939 is about 338.2433590468.

The spelling of 38697939 in words is "thirty-eight million, six hundred ninety-seven thousand, nine hundred thirty-nine".