39684464379 has 36 divisors (see below), whose sum is σ = 68027132784. Its totient is φ = 22676810544.

The previous prime is 39684464353. The next prime is 39684464411. The reversal of 39684464379 is 97346448693.

39684464379 is a `hidden beast` number, since 3 + 96 + 84 + 464 + 3 + 7 + 9 = 666.

It is not a de Polignac number, because 39684464379 - 2¹⁹ = 39683940091 is a prime.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (39684464179) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 386112 + ... + 477965.

Almost surely, 2^39684464379 is an apocalyptic number.

39684464379 is a deficient number, since it is larger than the sum of its proper divisors (28342668405).

39684464379 is an frugal number, since it uses more digits than its factorization.

39684464379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864108 (or 864087 counting only the distinct ones).

The product of its digits is 94058496, while the sum is 63.

The spelling of 39684464379 in words is "thirty-nine billion, six hundred eighty-four million, four hundred sixty-four thousand, three hundred seventy-nine".