39490245775 has 6 divisors (see below), whose sum is σ = 48967904792. Its totient is φ = 31592196600.

The previous prime is 39490245763. The next prime is 39490245799. The reversal of 39490245775 is 57754209493.

39490245775 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-39490245775 is a prime.

It is a super-2 number, since 2×39490245775² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 789804891 + ... + 789804940.

Almost surely, 2^39490245775 is an apocalyptic number.

39490245775 is a deficient number, since it is larger than the sum of its proper divisors (9477659017).

39490245775 is a wasteful number, since it uses less digits than its factorization.

39490245775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1579609841 (or 1579609836 counting only the distinct ones).

The product of its (nonzero) digits is 9525600, while the sum is 55.

The spelling of 39490245775 in words is "thirty-nine billion, four hundred ninety million, two hundred forty-five thousand, seven hundred seventy-five".