80479836 has 72 divisors (see below), whose sum is σ = 217591920. Its totient is φ = 24992256.

The previous prime is 80479793. The next prime is 80479837. The reversal of 80479836 is 63897408.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 80479791 and 80479800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80479837) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 64870 + ... + 66098.

It is an arithmetic number, because the mean of its divisors is an integer number (3022110).

Almost surely, 2^80479836 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 80479836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108795960).

80479836 is an abundant number, since it is smaller than the sum of its proper divisors (137112084).

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

80479836 is a wasteful number, since it uses less digits than its factorization.

80479836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1363 (or 1358 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 80479836 is about 8971.0554562994. The cubic root of 80479836 is about 431.7467007892.

The spelling of 80479836 in words is "eighty million, four hundred seventy-nine thousand, eight hundred thirty-six".