39979771 has 16 divisors (see below), whose sum is σ = 44108064. Its totient is φ = 36013824.

The previous prime is 39979769. The next prime is 39979813. The reversal of 39979771 is 17797993.

39979771 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 39979771 - 2¹ = 39979769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (39979711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 171471 + ... + 171703.

It is an arithmetic number, because the mean of its divisors is an integer number (2756754).

Almost surely, 2^39979771 is an apocalyptic number.

39979771 is a deficient number, since it is larger than the sum of its proper divisors (4128293).

39979771 is a wasteful number, since it uses less digits than its factorization.

39979771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510.

The product of its digits is 750141, while the sum is 52.

The square root of 39979771 is about 6322.9558752217. The cubic root of 39979771 is about 341.9375277749.

The spelling of 39979771 in words is "thirty-nine million, nine hundred seventy-nine thousand, seven hundred seventy-one".