79854440 has 64 divisors (see below), whose sum is σ = 194736960. Its totient is φ = 29352960.

The previous prime is 79854433. The next prime is 79854443. The reversal of 79854440 is 4445897.

It is not an unprimeable number, because it can be changed into a prime (79854443) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 27875 + ... + 30605.

It is an arithmetic number, because the mean of its divisors is an integer number (3042765).

Almost surely, 2^79854440 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 79854440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97368480).

79854440 is an abundant number, since it is smaller than the sum of its proper divisors (114882520).

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

79854440 is a wasteful number, since it uses less digits than its factorization.

79854440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2802 (or 2798 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 79854440 is about 8936.1311539167. The cubic root of 79854440 is about 430.6254464196.

The spelling of 79854440 in words is "seventy-nine million, eight hundred fifty-four thousand, four hundred forty".