79299440 has 80 divisors (see below), whose sum is σ = 203424480. Its totient is φ = 28508160.

The previous prime is 79299433. The next prime is 79299487. The reversal of 79299440 is 4499297.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 79299391 and 79299400.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 84896 + ... + 85824.

It is an arithmetic number, because the mean of its divisors is an integer number (2542806).

Almost surely, 2^79299440 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 79299440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101712240).

79299440 is an abundant number, since it is smaller than the sum of its proper divisors (124125040).

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

79299440 is a wasteful number, since it uses less digits than its factorization.

79299440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1050 (or 1044 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 79299440 is about 8905.0233014855. The cubic root of 79299440 is about 429.6254896696.

The spelling of 79299440 in words is "seventy-nine million, two hundred ninety-nine thousand, four hundred forty".