389961740 has 48 divisors (see below), whose sum is σ = 937065024. Its totient is φ = 133536000.

The previous prime is 389961709. The next prime is 389961743. The reversal of 389961740 is 47169983.

It is not an unprimeable number, because it can be changed into a prime (389961743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 181070 + ... + 183210.

It is an arithmetic number, because the mean of its divisors is an integer number (19522188).

Almost surely, 2^389961740 is an apocalyptic number.

It is an amenable number.

389961740 is an abundant number, since it is smaller than the sum of its proper divisors (547103284).

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

389961740 is a wasteful number, since it uses less digits than its factorization.

389961740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3458 (or 3456 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 389961740 is about 19747.4489491681. The cubic root of 389961740 is about 730.5904649110.

The spelling of 389961740 in words is "three hundred eighty-nine million, nine hundred sixty-one thousand, seven hundred forty".