79447752 has 48 divisors (see below), whose sum is σ = 215764380. Its totient is φ = 26409600.

The previous prime is 79447751. The next prime is 79447757. The reversal of 79447752 is 25774497.

It can be written as a sum of positive squares in 2 ways, for example, as 76842756 + 2604996 = 8766^2 + 1614^2 .

It is a junction number, because it is equal to n+sod(n) for n = 79447698 and 79447707.

It is not an unprimeable number, because it can be changed into a prime (79447751) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29002 + ... + 31622.

Almost surely, 2^79447752 is an apocalyptic number.

79447752 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

79447752 is an abundant number, since it is smaller than the sum of its proper divisors (136316628).

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

79447752 is a wasteful number, since it uses less digits than its factorization.

79447752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3054 (or 3047 counting only the distinct ones).

The product of its digits is 493920, while the sum is 45.

The square root of 79447752 is about 8913.3468461628. The cubic root of 79447752 is about 429.8931625687.

The spelling of 79447752 in words is "seventy-nine million, four hundred forty-seven thousand, seven hundred fifty-two".