78964379 has 8 divisors (see below), whose sum is σ = 85332912. Its totient is φ = 72637920.

The previous prime is 78964357. The next prime is 78964397. The reversal of 78964379 is 97346987.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78964379 - 2¹² = 78960283 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78964379.

It is not an unprimeable number, because it can be changed into a prime (78964309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6557 + ... + 14174.

It is an arithmetic number, because the mean of its divisors is an integer number (10666614).

Almost surely, 2^78964379 is an apocalyptic number.

78964379 is a deficient number, since it is larger than the sum of its proper divisors (6368533).

78964379 is a wasteful number, since it uses less digits than its factorization.

78964379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21037.

The product of its digits is 2286144, while the sum is 53.

The square root of 78964379 is about 8886.1903535767. The cubic root of 78964379 is about 429.0195418566.

The spelling of 78964379 in words is "seventy-eight million, nine hundred sixty-four thousand, three hundred seventy-nine".