80599440 has 80 divisors (see below), whose sum is σ = 255983616. Its totient is φ = 20966400.

The previous prime is 80599427. The next prime is 80599447. The reversal of 80599440 is 4499508.

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

It is not an unprimeable number, because it can be changed into a prime (80599447) 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, 5745 + ... + 13935.

Almost surely, 2^80599440 is an apocalyptic number.

80599440 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80599440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127991808).

80599440 is an abundant number, since it is smaller than the sum of its proper divisors (175384176).

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

80599440 is a wasteful number, since it uses less digits than its factorization.

80599440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8248 (or 8242 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 80599440 is about 8977.7190867168. The cubic root of 80599440 is about 431.9604730639.

The spelling of 80599440 in words is "eighty million, five hundred ninety-nine thousand, four hundred forty".