38387923 has 12 divisors (see below), whose sum is σ = 47006760. Its totient is φ = 31171392.

The previous prime is 38387903. The next prime is 38387927. The reversal of 38387923 is 32978383.

It is a de Polignac number, because none of the positive numbers 2^k-38387923 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38387923.

It is not an unprimeable number, because it can be changed into a prime (38387927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19686 + ... + 21547.

It is an arithmetic number, because the mean of its divisors is an integer number (3917230).

Almost surely, 2^38387923 is an apocalyptic number.

38387923 is a deficient number, since it is larger than the sum of its proper divisors (8618837).

38387923 is a wasteful number, since it uses less digits than its factorization.

38387923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41266 (or 41259 counting only the distinct ones).

The product of its digits is 217728, while the sum is 43.

The square root of 38387923 is about 6195.7988185544. The cubic root of 38387923 is about 337.3376938834.

The spelling of 38387923 in words is "thirty-eight million, three hundred eighty-seven thousand, nine hundred twenty-three".