389157770 has 16 divisors (see below), whose sum is σ = 705833568. Its totient is φ = 154474320.

The previous prime is 389157767. The next prime is 389157779. The reversal of 389157770 is 77751983.

It is not an unprimeable number, because it can be changed into a prime (389157779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147224 + ... + 149843.

It is an arithmetic number, because the mean of its divisors is an integer number (44114598).

Almost surely, 2^389157770 is an apocalyptic number.

389157770 is a deficient number, since it is larger than the sum of its proper divisors (316675798).

389157770 is a wasteful number, since it uses less digits than its factorization.

389157770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297205.

The product of its (nonzero) digits is 370440, while the sum is 47.

The square root of 389157770 is about 19727.0821461259. The cubic root of 389157770 is about 730.0880421741.

The spelling of 389157770 in words is "three hundred eighty-nine million, one hundred fifty-seven thousand, seven hundred seventy".