79919573 has 4 divisors (see below), whose sum is σ = 79950528. Its totient is φ = 79888620.

The previous prime is 79919531. The next prime is 79919603. The reversal of 79919573 is 37591997.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 79919573 - 2¹⁰ = 79918549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79919473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11213 + ... + 16898.

It is an arithmetic number, because the mean of its divisors is an integer number (19987632).

Almost surely, 2^79919573 is an apocalyptic number.

It is an amenable number.

79919573 is a deficient number, since it is larger than the sum of its proper divisors (30955).

79919573 is a wasteful number, since it uses less digits than its factorization.

79919573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30954.

The product of its digits is 535815, while the sum is 50.

The square root of 79919573 is about 8939.7747734493. The cubic root of 79919573 is about 430.7424939915.

The spelling of 79919573 in words is "seventy-nine million, nine hundred nineteen thousand, five hundred seventy-three".