80804919 has 8 divisors (see below), whose sum is σ = 116027632. Its totient is φ = 49726080.

The previous prime is 80804873. The next prime is 80804923. The reversal of 80804919 is 91940808.

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

It is not a de Polignac number, because 80804919 - 2¹² = 80800823 is a prime.

It is a super-2 number, since 2×80804919² = 13058869869193122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 2071921 = 80804919 / (8 + 0 + 8 + 0 + 4 + 9 + 1 + 9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80804989) 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, 1035922 + ... + 1035999.

It is an arithmetic number, because the mean of its divisors is an integer number (14503454).

Almost surely, 2^80804919 is an apocalyptic number.

80804919 is a deficient number, since it is larger than the sum of its proper divisors (35222713).

80804919 is a wasteful number, since it uses less digits than its factorization.

80804919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2071937.

The product of its (nonzero) digits is 20736, while the sum is 39.

The square root of 80804919 is about 8989.1556333173. The cubic root of 80804919 is about 432.3272394083.

The spelling of 80804919 in words is "eighty million, eight hundred four thousand, nine hundred nineteen".