389707642 has 8 divisors (see below), whose sum is σ = 586466496. Its totient is φ = 194218812.

The previous prime is 389707621. The next prime is 389707657. The reversal of 389707642 is 246707983.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 389707592 and 389707601.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 316738 + ... + 317965.

It is an arithmetic number, because the mean of its divisors is an integer number (73308312).

Almost surely, 2^389707642 is an apocalyptic number.

389707642 is a deficient number, since it is larger than the sum of its proper divisors (196758854).

389707642 is a wasteful number, since it uses less digits than its factorization.

389707642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635012.

The product of its (nonzero) digits is 508032, while the sum is 46.

The square root of 389707642 is about 19741.0142090015. The cubic root of 389707642 is about 730.4317468517.

The spelling of 389707642 in words is "three hundred eighty-nine million, seven hundred seven thousand, six hundred forty-two".