79644459 has 8 divisors (see below), whose sum is σ = 107244432. Its totient is φ = 52570400.

The previous prime is 79644457. The next prime is 79644479. The reversal of 79644459 is 95444697.

It is a happy number.

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 79644459 - 2¹ = 79644457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (79644457) 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, 131124 + ... + 131729.

It is an arithmetic number, because the mean of its divisors is an integer number (13405554).

Almost surely, 2^79644459 is an apocalyptic number.

79644459 is a deficient number, since it is larger than the sum of its proper divisors (27599973).

79644459 is a wasteful number, since it uses less digits than its factorization.

79644459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262957.

The product of its digits is 1088640, while the sum is 48.

The square root of 79644459 is about 8924.3744318580. The cubic root of 79644459 is about 430.2476651501.

The spelling of 79644459 in words is "seventy-nine million, six hundred forty-four thousand, four hundred fifty-nine".