39970417 has 4 divisors (see below), whose sum is σ = 42321636. Its totient is φ = 37619200.

The previous prime is 39970369. The next prime is 39970421. The reversal of 39970417 is 71407993.

39970417 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 30459361 + 9511056 = 5519^2 + 3084^2 .

It is a cyclic number.

It is not a de Polignac number, because 39970417 - 2⁷ = 39970289 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 39970417.

It is not an unprimeable number, because it can be changed into a prime (39970457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1175584 + ... + 1175617.

It is an arithmetic number, because the mean of its divisors is an integer number (10580409).

Almost surely, 2^39970417 is an apocalyptic number.

It is an amenable number.

39970417 is a deficient number, since it is larger than the sum of its proper divisors (2351219).

39970417 is a wasteful number, since it uses less digits than its factorization.

39970417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2351218.

The product of its (nonzero) digits is 47628, while the sum is 40.

The square root of 39970417 is about 6322.2161462576. The cubic root of 39970417 is about 341.9108581781.

The spelling of 39970417 in words is "thirty-nine million, nine hundred seventy thousand, four hundred seventeen".