389557742 has 24 divisors (see below), whose sum is σ = 686355696. Its totient is φ = 165328128.

The previous prime is 389557699. The next prime is 389557757. The reversal of 389557742 is 247755983.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9203 + ... + 29390.

It is an arithmetic number, because the mean of its divisors is an integer number (28598154).

Almost surely, 2^389557742 is an apocalyptic number.

389557742 is a deficient number, since it is larger than the sum of its proper divisors (296797954).

389557742 is a wasteful number, since it uses less digits than its factorization.

389557742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38712 (or 38705 counting only the distinct ones).

The product of its digits is 2116800, while the sum is 50.

The square root of 389557742 is about 19737.2171797343. The cubic root of 389557742 is about 730.3380819701.

The spelling of 389557742 in words is "three hundred eighty-nine million, five hundred fifty-seven thousand, seven hundred forty-two".