80440863 has 8 divisors (see below), whose sum is σ = 107422848. Its totient is φ = 53543064.

The previous prime is 80440859. The next prime is 80440901. The reversal of 80440863 is 36804408.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 80440863 - 2² = 80440859 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80440823) 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, 18781 + ... + 22662.

It is an arithmetic number, because the mean of its divisors is an integer number (13427856).

Almost surely, 2^80440863 is an apocalyptic number.

80440863 is a deficient number, since it is larger than the sum of its proper divisors (26981985).

80440863 is a wasteful number, since it uses less digits than its factorization.

80440863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42093.

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 80440863 is about 8968.8830408251. The cubic root of 80440863 is about 431.6769972798.

The spelling of 80440863 in words is "eighty million, four hundred forty thousand, eight hundred sixty-three".