389911979702 has 16 divisors (see below), whose sum is σ = 707739392160. Its totient is φ = 157275420288.

The previous prime is 389911979693. The next prime is 389911979711. The reversal of 389911979702 is 207979119983.

It is an interprime number because it is at equal distance from previous prime (389911979693) and next prime (389911979711).

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, 819142577 + ... + 819143052.

It is an arithmetic number, because the mean of its divisors is an integer number (44233712010).

Almost surely, 2^389911979702 is an apocalyptic number.

389911979702 is a deficient number, since it is larger than the sum of its proper divisors (317827412458).

389911979702 is a wasteful number, since it uses less digits than its factorization.

389911979702 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1638285655.

The product of its (nonzero) digits is 15431472, while the sum is 65.

The spelling of 389911979702 in words is "three hundred eighty-nine billion, nine hundred eleven million, nine hundred seventy-nine thousand, seven hundred two".