79944553 has 8 divisors (see below), whose sum is σ = 86206400. Its totient is φ = 73698768.

The previous prime is 79944551. The next prime is 79944559. The reversal of 79944553 is 35544997.

It is a happy number.

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

It is not a de Polignac number, because 79944553 - 2¹ = 79944551 is a prime.

It is a super-2 number, since 2×79944553² = 12782263108739618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79944551) 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, 7588 + ... + 14746.

It is an arithmetic number, because the mean of its divisors is an integer number (10775800).

Almost surely, 2^79944553 is an apocalyptic number.

It is an amenable number.

79944553 is a deficient number, since it is larger than the sum of its proper divisors (6261847).

79944553 is a wasteful number, since it uses less digits than its factorization.

79944553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8031.

The product of its digits is 680400, while the sum is 46.

The square root of 79944553 is about 8941.1717912139. The cubic root of 79944553 is about 430.7873675489.

The spelling of 79944553 in words is "seventy-nine million, nine hundred forty-four thousand, five hundred fifty-three".