39949074345 has 64 divisors (see below), whose sum is σ = 65889469440. Its totient is φ = 20660821248.

The previous prime is 39949074331. The next prime is 39949074383. The reversal of 39949074345 is 54347094993.

It is a happy number.

It is not a de Polignac number, because 39949074345 - 2⁴ = 39949074329 is a prime.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 26229754 + ... + 26231276.

It is an arithmetic number, because the mean of its divisors is an integer number (1029522960).

Almost surely, 2^39949074345 is an apocalyptic number.

It is an amenable number.

39949074345 is a deficient number, since it is larger than the sum of its proper divisors (25940395095).

39949074345 is a wasteful number, since it uses less digits than its factorization.

39949074345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1974.

The product of its (nonzero) digits is 14696640, while the sum is 57.

The spelling of 39949074345 in words is "thirty-nine billion, nine hundred forty-nine million, seventy-four thousand, three hundred forty-five".