39879496620686 has 16 divisors (see below), whose sum is σ = 59899772320080. Its totient is φ = 19912923800640.

The previous prime is 39879496620671. The next prime is 39879496620701. The reversal of 39879496620686 is 68602669497893.

It is an interprime number because it is at equal distance from previous prime (39879496620671) and next prime (39879496620701).

It is a super-2 number, since 2×39879496620686² (a number of 28 digits) contains 22 as substring.

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, 42776 + ... + 8930891.

It is an arithmetic number, because the mean of its divisors is an integer number (3743735770005).

Almost surely, 2^{39879496620686} is an apocalyptic number.

39879496620686 is a deficient number, since it is larger than the sum of its proper divisors (20020275699394).

39879496620686 is a wasteful number, since it uses less digits than its factorization.

39879496620686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8976659.

The product of its (nonzero) digits is 10158317568, while the sum is 83.

The spelling of 39879496620686 in words is "thirty-nine trillion, eight hundred seventy-nine billion, four hundred ninety-six million, six hundred twenty thousand, six hundred eighty-six".