39970358729 has 32 divisors (see below), whose sum is σ = 48815861760. Its totient is φ = 31964587200.

The previous prime is 39970358723. The next prime is 39970358731. The reversal of 39970358729 is 92785307993.

39970358729 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-39970358729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39970358723) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11547059 + ... + 11550519.

It is an arithmetic number, because the mean of its divisors is an integer number (1525495680).

Almost surely, 2^39970358729 is an apocalyptic number.

It is an amenable number.

39970358729 is a deficient number, since it is larger than the sum of its proper divisors (8845503031).

39970358729 is a wasteful number, since it uses less digits than its factorization.

39970358729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4781.

The product of its (nonzero) digits is 25719120, while the sum is 62.

The spelling of 39970358729 in words is "thirty-nine billion, nine hundred seventy million, three hundred fifty-eight thousand, seven hundred twenty-nine".