79891461 has 16 divisors (see below), whose sum is σ = 127462720. Its totient is φ = 49163760.

The previous prime is 79891457. The next prime is 79891507. The reversal of 79891461 is 16419897.

It is a happy number.

It is not a de Polignac number, because 79891461 - 2² = 79891457 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79891421) 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, 113455 + ... + 114156.

It is an arithmetic number, because the mean of its divisors is an integer number (7966420).

Almost surely, 2^79891461 is an apocalyptic number.

It is an amenable number.

79891461 is a deficient number, since it is larger than the sum of its proper divisors (47571259).

79891461 is a wasteful number, since it uses less digits than its factorization.

79891461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227633 (or 227627 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The square root of 79891461 is about 8938.2023360405. The cubic root of 79891461 is about 430.6919829898.

The spelling of 79891461 in words is "seventy-nine million, eight hundred ninety-one thousand, four hundred sixty-one".