389970450 has 60 divisors (see below), whose sum is σ = 1083551370. Its totient is φ = 103991040.

The previous prime is 389970443. The next prime is 389970487. The reversal of 389970450 is 54079983.

It can be written as a sum of positive squares in 3 ways, for example, as 304537401 + 85433049 = 17451^2 + 9243^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 389970396 and 389970405.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 44095 + ... + 52194.

Almost surely, 2^389970450 is an apocalyptic number.

389970450 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

389970450 is an abundant number, since it is smaller than the sum of its proper divisors (693580920).

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

389970450 is a wasteful number, since it uses less digits than its factorization.

389970450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96313 (or 96299 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 389970450 is about 19747.6694827516. The cubic root of 389970450 is about 730.5959042443.

The spelling of 389970450 in words is "three hundred eighty-nine million, nine hundred seventy thousand, four hundred fifty".