79372993 has 6 divisors (see below), whose sum is σ = 92331906. Its totient is φ = 68033952.

The previous prime is 79372991. The next prime is 79373009. The reversal of 79372993 is 39927397.

It can be written as a sum of positive squares in only one way, i.e., 45535504 + 33837489 = 6748^2 + 5817^2 .

It is not a de Polignac number, because 79372993 - 2¹ = 79372991 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49), and also a Moran number because the ratio is a prime number: 1619857 = 79372993 / (7 + 9 + 3 + 7 + 2 + 9 + 9 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79372991) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 809880 + ... + 809977.

It is an arithmetic number, because the mean of its divisors is an integer number (15388651).

Almost surely, 2^79372993 is an apocalyptic number.

It is an amenable number.

79372993 is a deficient number, since it is larger than the sum of its proper divisors (12958913).

79372993 is a wasteful number, since it uses less digits than its factorization.

79372993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1619871 (or 1619864 counting only the distinct ones).

The product of its digits is 642978, while the sum is 49.

The square root of 79372993 is about 8909.1522043346. The cubic root of 79372993 is about 429.7582795042.

The spelling of 79372993 in words is "seventy-nine million, three hundred seventy-two thousand, nine hundred ninety-three".