389243723236 has 27 divisors (see below), whose sum is σ = 700167310857. Its totient is φ = 189339351120.

The previous prime is 389243723201. The next prime is 389243723249. The reversal of 389243723236 is 632327342983.

The square root of 389243723236 is 623894.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 348300628900 + 40943094336 = 590170^2 + 202344^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 46163941 + ... + 46172371.

Almost surely, 2^389243723236 is an apocalyptic number.

389243723236 is the 623894-th square number.

It is an amenable number.

389243723236 is a deficient number, since it is larger than the sum of its proper divisors (310923587621).

389243723236 is an frugal number, since it uses more digits than its factorization.

389243723236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16940 (or 8470 counting only the distinct ones).

The product of its digits is 7838208, while the sum is 52.

The spelling of 389243723236 in words is "three hundred eighty-nine billion, two hundred forty-three million, seven hundred twenty-three thousand, two hundred thirty-six".