39970973842 has 8 divisors (see below), whose sum is σ = 59959169100. Its totient is φ = 19984584144.

The previous prime is 39970973837. The next prime is 39970973863. The reversal of 39970973842 is 24837907993.

It can be written as a sum of positive squares in 2 ways, for example, as 39959610201 + 11363641 = 199899^2 + 3371^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 394617 + ... + 485452.

Almost surely, 2^39970973842 is an apocalyptic number.

39970973842 is a deficient number, since it is larger than the sum of its proper divisors (19988195258).

39970973842 is a wasteful number, since it uses less digits than its factorization.

39970973842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 902780.

The product of its (nonzero) digits is 20575296, while the sum is 61.

The spelling of 39970973842 in words is "thirty-nine billion, nine hundred seventy million, nine hundred seventy-three thousand, eight hundred forty-two".