388620971 has 12 divisors (see below), whose sum is σ = 403935912. Its totient is φ = 373798656.

The previous prime is 388620961. The next prime is 388620983. The reversal of 388620971 is 179026883.

It is not a de Polignac number, because 388620971 - 2⁶ = 388620907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (388620961) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 122315 + ... + 125451.

It is an arithmetic number, because the mean of its divisors is an integer number (33661326).

Almost surely, 2^388620971 is an apocalyptic number.

388620971 is a deficient number, since it is larger than the sum of its proper divisors (15314941).

388620971 is an equidigital number, since it uses as much as digits as its factorization.

388620971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3290 (or 3247 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 388620971 is about 19713.4718149797. The cubic root of 388620971 is about 729.7521964939.

The spelling of 388620971 in words is "three hundred eighty-eight million, six hundred twenty thousand, nine hundred seventy-one".