387982923 has 4 divisors (see below), whose sum is σ = 517310568. Its totient is φ = 258655280.

The previous prime is 387982921. The next prime is 387982943. The reversal of 387982923 is 329289783.

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 387982923 - 2¹ = 387982921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (387982921) 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, 64663818 + ... + 64663823.

It is an arithmetic number, because the mean of its divisors is an integer number (129327642).

Almost surely, 2^387982923 is an apocalyptic number.

387982923 is a deficient number, since it is larger than the sum of its proper divisors (129327645).

387982923 is a wasteful number, since it uses less digits than its factorization.

387982923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129327644.

The product of its digits is 1306368, while the sum is 51.

The square root of 387982923 is about 19697.2821221609. The cubic root of 387982923 is about 729.3526023584.

The spelling of 387982923 in words is "three hundred eighty-seven million, nine hundred eighty-two thousand, nine hundred twenty-three".