80944919 has 8 divisors (see below), whose sum is σ = 89162112. Its totient is φ = 72870840.

The previous prime is 80944891. The next prime is 80944931. The reversal of 80944919 is 91944908.

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

It is a cyclic number.

It is not a de Polignac number, because 80944919 - 2²⁰ = 79896343 is a prime.

It is a super-2 number, since 2×80944919² = 13104159823833122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 80944919.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80944949) 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, 34589 + ... + 36854.

It is an arithmetic number, because the mean of its divisors is an integer number (11145264).

Almost surely, 2^80944919 is an apocalyptic number.

80944919 is a deficient number, since it is larger than the sum of its proper divisors (8217193).

80944919 is a wasteful number, since it uses less digits than its factorization.

80944919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71557.

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 80944919 is about 8996.9394240486. The cubic root of 80944919 is about 432.5767741018.

The spelling of 80944919 in words is "eighty million, nine hundred forty-four thousand, nine hundred nineteen".