39670439690 has 24 divisors (see below), whose sum is σ = 83065044132. Its totient is φ = 13601293440.

The previous prime is 39670439651. The next prime is 39670439729. The reversal of 39670439690 is 9693407693.

39670439690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (39670439651) and next prime (39670439729).

It can be written as a sum of positive squares in 2 ways, for example, as 38963996449 + 706443241 = 197393^2 + 26579^2 .

It is a super-2 number, since 2×39670439690² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40479551 + ... + 40480530.

Almost surely, 2^39670439690 is an apocalyptic number.

39670439690 is an abundant number, since it is smaller than the sum of its proper divisors (43394604442).

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

39670439690 is a wasteful number, since it uses less digits than its factorization.

39670439690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80960102 (or 80960095 counting only the distinct ones).

The product of its (nonzero) digits is 6613488, while the sum is 56.

The spelling of 39670439690 in words is "thirty-nine billion, six hundred seventy million, four hundred thirty-nine thousand, six hundred ninety".