389463128 has 8 divisors (see below), whose sum is σ = 730243380. Its totient is φ = 194731560.

The previous prime is 389463097. The next prime is 389463157. The reversal of 389463128 is 821364983.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24341438 + ... + 24341453.

Almost surely, 2^389463128 is an apocalyptic number.

It is an amenable number.

389463128 is a deficient number, since it is larger than the sum of its proper divisors (340780252).

389463128 is a wasteful number, since it uses less digits than its factorization.

389463128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48682897 (or 48682893 counting only the distinct ones).

The product of its digits is 248832, while the sum is 44.

The square root of 389463128 is about 19734.8201917322. The cubic root of 389463128 is about 730.2789501266.

The spelling of 389463128 in words is "three hundred eighty-nine million, four hundred sixty-three thousand, one hundred twenty-eight".