389909534 has 16 divisors (see below), whose sum is σ = 675928800. Its totient is φ = 165225984.

The previous prime is 389909521. The next prime is 389909539. The reversal of 389909534 is 435909983.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389909539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155219 + ... + 157710.

It is an arithmetic number, because the mean of its divisors is an integer number (42245550).

Almost surely, 2^389909534 is an apocalyptic number.

389909534 is a deficient number, since it is larger than the sum of its proper divisors (286019266).

389909534 is a wasteful number, since it uses less digits than its factorization.

389909534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313027.

The product of its (nonzero) digits is 1049760, while the sum is 50.

The square root of 389909534 is about 19746.1270633003. The cubic root of 389909534 is about 730.5578609364.

The spelling of 389909534 in words is "three hundred eighty-nine million, nine hundred nine thousand, five hundred thirty-four".