386884989 has 6 divisors (see below), whose sum is σ = 558833886. Its totient is φ = 257923320.

The previous prime is 386884957. The next prime is 386885003. The reversal of 386884989 is 989488683.

It can be written as a sum of positive squares in only one way, i.e., 381889764 + 4995225 = 19542^2 + 2235^2 .

It is not a de Polignac number, because 386884989 - 2⁵ = 386884957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (386884919) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21493602 + ... + 21493619.

It is an arithmetic number, because the mean of its divisors is an integer number (93138981).

Almost surely, 2^386884989 is an apocalyptic number.

It is an amenable number.

386884989 is a deficient number, since it is larger than the sum of its proper divisors (171948897).

386884989 is a wasteful number, since it uses less digits than its factorization.

386884989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42987227 (or 42987224 counting only the distinct ones).

The product of its digits is 23887872, while the sum is 63.

The square root of 386884989 is about 19669.3921868471. The cubic root of 386884989 is about 728.6639658866.

The spelling of 386884989 in words is "three hundred eighty-six million, eight hundred eighty-four thousand, nine hundred eighty-nine".