389308704 has 48 divisors (see below), whose sum is σ = 1082053728. Its totient is φ = 122135552.

The previous prime is 389308697. The next prime is 389308723. The reversal of 389308704 is 407803983.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×389308704² = 303122534020319232, which contains 22 as substring.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117642 + ... + 120905.

It is an arithmetic number, because the mean of its divisors is an integer number (22542786).

Almost surely, 2^389308704 is an apocalyptic number.

389308704 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

389308704 is an abundant number, since it is smaller than the sum of its proper divisors (692745024).

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

389308704 is a wasteful number, since it uses less digits than its factorization.

389308704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238577 (or 238569 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 389308704 is about 19730.9073283516. The cubic root of 389308704 is about 730.1824176638.

The spelling of 389308704 in words is "three hundred eighty-nine million, three hundred eight thousand, seven hundred four".