79975944 has 64 divisors (see below), whose sum is σ = 228182400. Its totient is φ = 25935552.

The previous prime is 79975901. The next prime is 79975949. The reversal of 79975944 is 44957997.

It is a super-2 number, since 2×79975944² = 12792303237382272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (79975949) 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, 2989 + ... + 12995.

It is an arithmetic number, because the mean of its divisors is an integer number (3565350).

Almost surely, 2^79975944 is an apocalyptic number.

79975944 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79975944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114091200).

79975944 is an abundant number, since it is smaller than the sum of its proper divisors (148206456).

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

79975944 is a wasteful number, since it uses less digits than its factorization.

79975944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10059 (or 10049 counting only the distinct ones).

The product of its digits is 2857680, while the sum is 54.

The square root of 79975944 is about 8942.9270376091. The cubic root of 79975944 is about 430.8437444426.

The spelling of 79975944 in words is "seventy-nine million, nine hundred seventy-five thousand, nine hundred forty-four".