79040448 has 140 divisors (see below), whose sum is σ = 238495840. Its totient is φ = 25878528.

The previous prime is 79040441. The next prime is 79040453. The reversal of 79040448 is 84404097.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79040441) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 409440 + ... + 409632.

Almost surely, 2^79040448 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79040448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119247920).

79040448 is an abundant number, since it is smaller than the sum of its proper divisors (159455392).

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

79040448 is a wasteful number, since it uses less digits than its factorization.

79040448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296 (or 277 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 79040448 is about 8890.4695039126. The cubic root of 79040448 is about 429.1572605515.

The spelling of 79040448 in words is "seventy-nine million, forty thousand, four hundred forty-eight".