389781694 has 16 divisors (see below), whose sum is σ = 615847680. Its totient is φ = 184512600.

The previous prime is 389781683. The next prime is 389781727. The reversal of 389781694 is 496187983.

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, 87157 + ... + 91519.

It is an arithmetic number, because the mean of its divisors is an integer number (38490480).

Almost surely, 2^389781694 is an apocalyptic number.

389781694 is a deficient number, since it is larger than the sum of its proper divisors (226065986).

389781694 is a wasteful number, since it uses less digits than its factorization.

389781694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6735.

The product of its digits is 2612736, while the sum is 55.

The square root of 389781694 is about 19742.8897074364. The cubic root of 389781694 is about 730.4780093146.

The spelling of 389781694 in words is "three hundred eighty-nine million, seven hundred eighty-one thousand, six hundred ninety-four".