389933390 has 96 divisors (see below), whose sum is σ = 928488960. Its totient is φ = 115093440.

The previous prime is 389933389. The next prime is 389933399. The reversal of 389933390 is 93339983.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389933399) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 159719 + ... + 162141.

It is an arithmetic number, because the mean of its divisors is an integer number (9671760).

Almost surely, 2^389933390 is an apocalyptic number.

389933390 is an abundant number, since it is smaller than the sum of its proper divisors (538555570).

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

389933390 is a wasteful number, since it uses less digits than its factorization.

389933390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2478 (or 2467 counting only the distinct ones).

The product of its (nonzero) digits is 472392, while the sum is 47.

The square root of 389933390 is about 19746.7311218845. The cubic root of 389933390 is about 730.5727599761.

The spelling of 389933390 in words is "three hundred eighty-nine million, nine hundred thirty-three thousand, three hundred ninety".