79440102 has 96 divisors (see below), whose sum is σ = 214905600. Its totient is φ = 21485088.

The previous prime is 79440079. The next prime is 79440113. The reversal of 79440102 is 20104497.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 64024 + ... + 65252.

It is an arithmetic number, because the mean of its divisors is an integer number (2238600).

Almost surely, 2^79440102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79440102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107452800).

79440102 is an abundant number, since it is smaller than the sum of its proper divisors (135465498).

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

79440102 is a wasteful number, since it uses less digits than its factorization.

79440102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1272 (or 1260 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 79440102 is about 8912.9177040967. The cubic root of 79440102 is about 429.8793640316.

Adding to 79440102 its reverse (20104497), we get a palindrome (99544599).

The spelling of 79440102 in words is "seventy-nine million, four hundred forty thousand, one hundred two".