388696945 has 32 divisors (see below), whose sum is σ = 580059648. Its totient is φ = 243468288.

The previous prime is 388696907. The next prime is 388696961. The reversal of 388696945 is 549696883.

It is not a de Polignac number, because 388696945 - 2¹¹ = 388694897 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 388696945.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39732 + ... + 48538.

It is an arithmetic number, because the mean of its divisors is an integer number (18126864).

Almost surely, 2^388696945 is an apocalyptic number.

388696945 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

388696945 is a deficient number, since it is larger than the sum of its proper divisors (191362703).

388696945 is a wasteful number, since it uses less digits than its factorization.

388696945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8929.

The product of its digits is 11197440, while the sum is 58.

The square root of 388696945 is about 19715.3986771762. The cubic root of 388696945 is about 729.7997480373.

The spelling of 388696945 in words is "three hundred eighty-eight million, six hundred ninety-six thousand, nine hundred forty-five".