388469331 has 16 divisors (see below), whose sum is σ = 581212320. Its totient is φ = 256413600.

The previous prime is 388469317. The next prime is 388469359. The reversal of 388469331 is 133964883.

It is not a de Polignac number, because 388469331 - 2⁷ = 388469203 is a prime.

It is a super-2 number, since 2×388469331² = 301816842255175122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (388469311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68500 + ... + 73953.

It is an arithmetic number, because the mean of its divisors is an integer number (36325770).

Almost surely, 2^388469331 is an apocalyptic number.

388469331 is a deficient number, since it is larger than the sum of its proper divisors (192742989).

388469331 is a wasteful number, since it uses less digits than its factorization.

388469331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142563 (or 142557 counting only the distinct ones).

The product of its digits is 373248, while the sum is 45.

The square root of 388469331 is about 19709.6253389048. The cubic root of 388469331 is about 729.6572676493.

The spelling of 388469331 in words is "three hundred eighty-eight million, four hundred sixty-nine thousand, three hundred thirty-one".