389242744 has 32 divisors (see below), whose sum is σ = 843015600. Its totient is φ = 166520320.

The previous prime is 389242723. The next prime is 389242753. The reversal of 389242744 is 447242983.

It is a self number, because there is not a number n which added to its sum of digits gives 389242744.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128599 + ... + 131590.

Almost surely, 2^389242744 is an apocalyptic number.

389242744 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

389242744 is an abundant number, since it is smaller than the sum of its proper divisors (453772856).

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

389242744 is a wasteful number, since it uses less digits than its factorization.

389242744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260223 (or 260219 counting only the distinct ones).

The product of its digits is 387072, while the sum is 43.

The square root of 389242744 is about 19729.2357682704. The cubic root of 389242744 is about 730.1411774243.

The spelling of 389242744 in words is "three hundred eighty-nine million, two hundred forty-two thousand, seven hundred forty-four".