39745079 has 4 divisors (see below), whose sum is σ = 43358280. Its totient is φ = 36131880.

The previous prime is 39745049. The next prime is 39745087. The reversal of 39745079 is 97054793.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 39745079 - 2²⁴ = 22967863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39745049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1806584 + ... + 1806605.

It is an arithmetic number, because the mean of its divisors is an integer number (10839570).

Almost surely, 2^39745079 is an apocalyptic number.

39745079 is a deficient number, since it is larger than the sum of its proper divisors (3613201).

39745079 is a wasteful number, since it uses less digits than its factorization.

39745079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3613200.

The product of its (nonzero) digits is 238140, while the sum is 44.

The square root of 39745079 is about 6304.3698336947. The cubic root of 39745079 is about 341.2671258518.

The spelling of 39745079 in words is "thirty-nine million, seven hundred forty-five thousand, seventy-nine".