389966904252 has 144 divisors (see below), whose sum is σ = 1082970981120. Its totient is φ = 121308609312.

The previous prime is 389966904149. The next prime is 389966904287. The reversal of 389966904252 is 252409669983.

389966904252 is a `hidden beast` number, since 38 + 9 + 96 + 6 + 90 + 425 + 2 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 389966904252.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2537553 + ... + 2686839.

Almost surely, 2^389966904252 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 389966904252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (541485490560).

389966904252 is an abundant number, since it is smaller than the sum of its proper divisors (693004076868).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

389966904252 is a wasteful number, since it uses less digits than its factorization.

389966904252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149405 (or 149378 counting only the distinct ones).

The product of its (nonzero) digits is 50388480, while the sum is 63.

The spelling of 389966904252 in words is "three hundred eighty-nine billion, nine hundred sixty-six million, nine hundred four thousand, two hundred fifty-two".