39909572774 has 32 divisors (see below), whose sum is σ = 63689976000. Its totient is φ = 18728962560.

The previous prime is 39909572749. The next prime is 39909572779. The reversal of 39909572774 is 47727590993.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39909572779) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 196127 + ... + 343925.

It is an arithmetic number, because the mean of its divisors is an integer number (1990311750).

Almost surely, 2^39909572774 is an apocalyptic number.

39909572774 is a deficient number, since it is larger than the sum of its proper divisors (23780403226).

39909572774 is a wasteful number, since it uses less digits than its factorization.

39909572774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147968.

The product of its (nonzero) digits is 30005640, while the sum is 62.

The spelling of 39909572774 in words is "thirty-nine billion, nine hundred nine million, five hundred seventy-two thousand, seven hundred seventy-four".