387974439 has 6 divisors (see below), whose sum is σ = 560407536. Its totient is φ = 258649620.

The previous prime is 387974429. The next prime is 387974467. The reversal of 387974439 is 934479783.

It is not a de Polignac number, because 387974439 - 2⁷ = 387974311 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387974429) 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 5 ways as a sum of consecutive naturals, for example, 21554127 + ... + 21554144.

It is an arithmetic number, because the mean of its divisors is an integer number (93401256).

Almost surely, 2^387974439 is an apocalyptic number.

387974439 is a deficient number, since it is larger than the sum of its proper divisors (172433097).

387974439 is a wasteful number, since it uses less digits than its factorization.

387974439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43108277 (or 43108274 counting only the distinct ones).

The product of its digits is 4572288, while the sum is 54.

The square root of 387974439 is about 19697.0667613226. The cubic root of 387974439 is about 729.3472860827.

It can be divided in two parts, 3879744 and 39, that added together give a palindrome (3879783).

The spelling of 387974439 in words is "three hundred eighty-seven million, nine hundred seventy-four thousand, four hundred thirty-nine".