389947494 has 32 divisors (see below), whose sum is σ = 792679680. Its totient is φ = 127868832.

The previous prime is 389947471. The next prime is 389947517. The reversal of 389947494 is 494749983.

It is an interprime number because it is at equal distance from previous prime (389947471) and next prime (389947517).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95017 + ... + 99035.

It is an arithmetic number, because the mean of its divisors is an integer number (24771240).

Almost surely, 2^389947494 is an apocalyptic number.

389947494 is an abundant number, since it is smaller than the sum of its proper divisors (402732186).

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

389947494 is a wasteful number, since it uses less digits than its factorization.

389947494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4284.

The product of its digits is 7838208, while the sum is 57.

The square root of 389947494 is about 19747.0882410547. The cubic root of 389947494 is about 730.5815682104.

The spelling of 389947494 in words is "three hundred eighty-nine million, nine hundred forty-seven thousand, four hundred ninety-four".