39892971 has 16 divisors (see below), whose sum is σ = 55756800. Its totient is φ = 25322880.

The previous prime is 39892891. The next prime is 39892973. The reversal of 39892971 is 17929893.

It is not a de Polignac number, because 39892971 - 2⁷ = 39892843 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 39892971.

It is not an unprimeable number, because it can be changed into a prime (39892973) 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, 15430 + ... + 17828.

It is an arithmetic number, because the mean of its divisors is an integer number (3484800).

Almost surely, 2^39892971 is an apocalyptic number.

39892971 is a deficient number, since it is larger than the sum of its proper divisors (15863829).

39892971 is a wasteful number, since it uses less digits than its factorization.

39892971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2666.

The product of its digits is 244944, while the sum is 48.

The square root of 39892971 is about 6316.0882672743. The cubic root of 39892971 is about 341.6898885135.

The spelling of 39892971 in words is "thirty-nine million, eight hundred ninety-two thousand, nine hundred seventy-one".