80895309 has 16 divisors (see below), whose sum is σ = 118195200. Its totient is φ = 48806960.

The previous prime is 80895307. The next prime is 80895323. The reversal of 80895309 is 90359808.

It is a cyclic number.

It is not a de Polignac number, because 80895309 - 2¹ = 80895307 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80895307) 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, 2092 + ... + 12890.

It is an arithmetic number, because the mean of its divisors is an integer number (7387200).

Almost surely, 2^80895309 is an apocalyptic number.

It is an amenable number.

80895309 is a deficient number, since it is larger than the sum of its proper divisors (37299891).

80895309 is a wasteful number, since it uses less digits than its factorization.

80895309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11040.

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 80895309 is about 8994.1819527959. The cubic root of 80895309 is about 432.4883826387.

The spelling of 80895309 in words is "eighty million, eight hundred ninety-five thousand, three hundred nine".