79961544 has 48 divisors (see below), whose sum is σ = 233223900. Its totient is φ = 24603264.

The previous prime is 79961543. The next prime is 79961569. The reversal of 79961544 is 44516997.

It can be written as a sum of positive squares in 2 ways, for example, as 58339044 + 21622500 = 7638^2 + 4650^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 79961544.

It is not an unprimeable number, because it can be changed into a prime (79961543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41779 + ... + 43650.

Almost surely, 2^79961544 is an apocalyptic number.

It is an amenable number.

79961544 is an abundant number, since it is smaller than the sum of its proper divisors (153262356).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

79961544 is a wasteful number, since it uses less digits than its factorization.

79961544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85454 (or 85447 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 79961544 is about 8942.1218958366. The cubic root of 79961544 is about 430.8178844902.

The spelling of 79961544 in words is "seventy-nine million, nine hundred sixty-one thousand, five hundred forty-four".