39809660670 has 48 divisors (see below), whose sum is σ = 111467053152. Its totient is φ = 9799300800.

The previous prime is 39809660659. The next prime is 39809660689. The reversal of 39809660670 is 7606690893.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17011506 + ... + 17013845.

It is an arithmetic number, because the mean of its divisors is an integer number (2322230274).

Almost surely, 2^39809660670 is an apocalyptic number.

39809660670 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

39809660670 is an abundant number, since it is smaller than the sum of its proper divisors (71657392482).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39809660670 is a wasteful number, since it uses less digits than its factorization.

39809660670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34025377 (or 34025374 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 54.

The spelling of 39809660670 in words is "thirty-nine billion, eight hundred nine million, six hundred sixty thousand, six hundred seventy".