38922987 has 4 divisors (see below), whose sum is σ = 51897320. Its totient is φ = 25948656.

The previous prime is 38922977. The next prime is 38922997. The reversal of 38922987 is 78922983.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (38922977) and next prime (38922997).

It is not a de Polignac number, because 38922987 - 2²⁰ = 37874411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38922937) 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, 6487162 + ... + 6487167.

It is an arithmetic number, because the mean of its divisors is an integer number (12974330).

Almost surely, 2^38922987 is an apocalyptic number.

38922987 is a deficient number, since it is larger than the sum of its proper divisors (12974333).

38922987 is a wasteful number, since it uses less digits than its factorization.

38922987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12974332.

The product of its digits is 435456, while the sum is 48.

The square root of 38922987 is about 6238.8289766590. The cubic root of 38922987 is about 338.8977772381.

The spelling of 38922987 in words is "thirty-eight million, nine hundred twenty-two thousand, nine hundred eighty-seven".