80440911 has 16 divisors (see below), whose sum is σ = 120115200. Its totient is φ = 53202744.

The previous prime is 80440903. The next prime is 80440931. The reversal of 80440911 is 11904408.

It is not a de Polignac number, because 80440911 - 2³ = 80440903 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80440901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8301 + ... + 15158.

It is an arithmetic number, because the mean of its divisors is an integer number (7507200).

Almost surely, 2^80440911 is an apocalyptic number.

80440911 is a deficient number, since it is larger than the sum of its proper divisors (39674289).

80440911 is a wasteful number, since it uses less digits than its factorization.

80440911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23595 (or 23589 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 80440911 is about 8968.8857167432. The cubic root of 80440911 is about 431.6770831420.

The spelling of 80440911 in words is "eighty million, four hundred forty thousand, nine hundred eleven".