389899436 has 6 divisors (see below), whose sum is σ = 682324020. Its totient is φ = 194949716.

The previous prime is 389899421. The next prime is 389899439. The reversal of 389899436 is 634998983.

It is not an unprimeable number, because it can be changed into a prime (389899439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48737426 + ... + 48737433.

It is an arithmetic number, because the mean of its divisors is an integer number (113720670).

Almost surely, 2^389899436 is an apocalyptic number.

It is an amenable number.

389899436 is a deficient number, since it is larger than the sum of its proper divisors (292424584).

389899436 is a wasteful number, since it uses less digits than its factorization.

389899436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97474863 (or 97474861 counting only the distinct ones).

The product of its digits is 10077696, while the sum is 59.

The square root of 389899436 is about 19745.8713659337. The cubic root of 389899436 is about 730.5515541427.

The spelling of 389899436 in words is "three hundred eighty-nine million, eight hundred ninety-nine thousand, four hundred thirty-six".