38972923 has 4 divisors (see below), whose sum is σ = 42515928. Its totient is φ = 35429920.

The previous prime is 38972911. The next prime is 38972929. The reversal of 38972923 is 32927983.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 38972923 - 2⁹ = 38972411 is a prime.

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 38972923.

It is not an unprimeable number, because it can be changed into a prime (38972929) 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, 1771486 + ... + 1771507.

It is an arithmetic number, because the mean of its divisors is an integer number (10628982).

Almost surely, 2^38972923 is an apocalyptic number.

38972923 is a deficient number, since it is larger than the sum of its proper divisors (3543005).

38972923 is a wasteful number, since it uses less digits than its factorization.

38972923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3543004.

The product of its digits is 163296, while the sum is 43.

The square root of 38972923 is about 6242.8297269748. The cubic root of 38972923 is about 339.0426442236.

The spelling of 38972923 in words is "thirty-eight million, nine hundred seventy-two thousand, nine hundred twenty-three".