80405885 has 8 divisors (see below), whose sum is σ = 110270976. Its totient is φ = 55135440.

The previous prime is 80405881. The next prime is 80405887. The reversal of 80405885 is 58850408.

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

It is not a de Polignac number, because 80405885 - 2² = 80405881 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80405881) 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, 1148621 + ... + 1148690.

It is an arithmetic number, because the mean of its divisors is an integer number (13783872).

Almost surely, 2^80405885 is an apocalyptic number.

It is an amenable number.

80405885 is a deficient number, since it is larger than the sum of its proper divisors (29865091).

80405885 is a wasteful number, since it uses less digits than its factorization.

80405885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2297323.

The product of its (nonzero) digits is 51200, while the sum is 38.

The square root of 80405885 is about 8966.9328646979. The cubic root of 80405885 is about 431.6144196855.

The spelling of 80405885 in words is "eighty million, four hundred five thousand, eight hundred eighty-five".