79221243 has 16 divisors (see below), whose sum is σ = 110073600. Its totient is φ = 50618400.

The previous prime is 79221229. The next prime is 79221251. The reversal of 79221243 is 34212297.

It is not a de Polignac number, because 79221243 - 2¹⁴ = 79204859 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 79221243.

It is not an unprimeable number, because it can be changed into a prime (79221253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8818 + ... + 15368.

It is an arithmetic number, because the mean of its divisors is an integer number (6879600).

Almost surely, 2^79221243 is an apocalyptic number.

79221243 is a deficient number, since it is larger than the sum of its proper divisors (30852357).

79221243 is a wasteful number, since it uses less digits than its factorization.

79221243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6722.

The product of its digits is 6048, while the sum is 30.

The square root of 79221243 is about 8900.6316068018. The cubic root of 79221243 is about 429.4842256486.

The spelling of 79221243 in words is "seventy-nine million, two hundred twenty-one thousand, two hundred forty-three".