79479450241 has 3 divisors (see below), whose sum is σ = 79479732163. Its totient is φ = 79479168320.

The previous prime is 79479450137. The next prime is 79479450247. The reversal of 79479450241 is 14205497497.

It is a happy number.

The square root of 79479450241 is 281921.

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., 52042840641 + 27436609600 = 228129^2 + 165640^2 .

It is not a de Polignac number, because 79479450241 - 2¹¹ = 79479448193 is a prime.

It is a super-2 number, since 2×79479450241² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79479450247) 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, 140961 + ... + 422881.

Almost surely, 2^79479450241 is an apocalyptic number.

79479450241 is the 281921-st square number.

79479450241 is the 140961-st centered octagonal number.

It is an amenable number.

79479450241 is a deficient number, since it is larger than the sum of its proper divisors (281922).

79479450241 is an frugal number, since it uses more digits than its factorization.

79479450241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563842 (or 281921 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 52.

The spelling of 79479450241 in words is "seventy-nine billion, four hundred seventy-nine million, four hundred fifty thousand, two hundred forty-one".