39970873 has 6 divisors (see below), whose sum is σ = 41302842. Its totient is φ = 38680560.

The previous prime is 39970817. The next prime is 39970883. The reversal of 39970873 is 37807993.

It can be written as a sum of positive squares in only one way, i.e., 28761769 + 11209104 = 5363^2 + 3348^2 .

It is not a de Polignac number, because 39970873 - 2⁹ = 39970361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39970883) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19836 + ... + 21757.

It is an arithmetic number, because the mean of its divisors is an integer number (6883807).

Almost surely, 2^39970873 is an apocalyptic number.

It is an amenable number.

39970873 is a deficient number, since it is larger than the sum of its proper divisors (1331969).

39970873 is an equidigital number, since it uses as much as digits as its factorization.

39970873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41655 (or 41624 counting only the distinct ones).

The product of its (nonzero) digits is 285768, while the sum is 46.

The square root of 39970873 is about 6322.2522094583. The cubic root of 39970873 is about 341.9121583961.

The spelling of 39970873 in words is "thirty-nine million, nine hundred seventy thousand, eight hundred seventy-three".