79274344249 has 3 divisors (see below), whose sum is σ = 79274625807. Its totient is φ = 79274062692.

The previous prime is 79274344217. The next prime is 79274344277. The reversal of 79274344249 is 94244347297.

The square root of 79274344249 is 281557.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 38684989225 + 40589355024 = 196685^2 + 201468^2 .

It is not a de Polignac number, because 79274344249 - 2⁵ = 79274344217 is a prime.

It is a super-2 number, since 2×79274344249² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 79274344249.

It is not an unprimeable number, because it can be changed into a prime (79274344049) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 140779 + ... + 422335.

It is an arithmetic number, because the mean of its divisors is an integer number (26424875269).

Almost surely, 2^79274344249 is an apocalyptic number.

79274344249 is the 281557-th square number.

79274344249 is the 140779-th centered octagonal number.

It is an amenable number.

79274344249 is a deficient number, since it is larger than the sum of its proper divisors (281558).

79274344249 is an frugal number, since it uses more digits than its factorization.

79274344249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563114 (or 281557 counting only the distinct ones).

The product of its digits is 12192768, while the sum is 55.

The spelling of 79274344249 in words is "seventy-nine billion, two hundred seventy-four million, three hundred forty-four thousand, two hundred forty-nine".