80844365 has 12 divisors (see below), whose sum is σ = 112852476. Its totient is φ = 55435968.

The previous prime is 80844353. The next prime is 80844377. The reversal of 80844365 is 56344808.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (80844353) and next prime (80844377).

It can be written as a sum of positive squares in 2 ways, for example, as 50879689 + 29964676 = 7133^2 + 5474^2 .

It is not a de Polignac number, because 80844365 - 2⁸ = 80844109 is a prime.

It is a super-2 number, since 2×80844365² = 13071622704506450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 164744 + ... + 165233.

It is an arithmetic number, because the mean of its divisors is an integer number (9404373).

Almost surely, 2^80844365 is an apocalyptic number.

It is an amenable number.

80844365 is a deficient number, since it is larger than the sum of its proper divisors (32008111).

80844365 is a wasteful number, since it uses less digits than its factorization.

80844365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329996 (or 329989 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 38.

The square root of 80844365 is about 8991.3494537806. The cubic root of 80844365 is about 432.3975767354.

The spelling of 80844365 in words is "eighty million, eight hundred forty-four thousand, three hundred sixty-five".