389953536 has 96 divisors (see below), whose sum is σ = 1188270720. Its totient is φ = 111403008.

The previous prime is 389953457. The next prime is 389953609. The reversal of 389953536 is 635359983.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38475 + ... + 47541.

It is an arithmetic number, because the mean of its divisors is an integer number (12377820).

Almost surely, 2^389953536 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 389953536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (594135360).

389953536 is an abundant number, since it is smaller than the sum of its proper divisors (798317184).

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

389953536 is an equidigital number, since it uses as much as digits as its factorization.

389953536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9099 (or 9079 counting only the distinct ones).

The product of its digits is 2624400, while the sum is 51.

The square root of 389953536 is about 19747.2412250420. The cubic root of 389953536 is about 730.5853414971.

The spelling of 389953536 in words is "three hundred eighty-nine million, nine hundred fifty-three thousand, five hundred thirty-six".