80811444 has 24 divisors (see below), whose sum is σ = 215497408. Its totient is φ = 23088960.

The previous prime is 80811439. The next prime is 80811449. The reversal of 80811444 is 44411808.

It is an interprime number because it is at equal distance from previous prime (80811439) and next prime (80811449).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80811449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 480937 + ... + 481104.

Almost surely, 2^80811444 is an apocalyptic number.

80811444 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

80811444 is an abundant number, since it is smaller than the sum of its proper divisors (134685964).

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

80811444 is a wasteful number, since it uses less digits than its factorization.

80811444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 962055 (or 962053 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 30.

The square root of 80811444 is about 8989.5185633047. The cubic root of 80811444 is about 432.3388759082.

The spelling of 80811444 in words is "eighty million, eight hundred eleven thousand, four hundred forty-four".