80459919 has 8 divisors (see below), whose sum is σ = 119199920. Its totient is φ = 53639928.

The previous prime is 80459909. The next prime is 80459921. The reversal of 80459919 is 91995408.

It is not a de Polignac number, because 80459919 - 2⁷ = 80459791 is a prime.

It is a super-2 number, since 2×80459919² = 12947597130973122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80459909) 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, 1489972 + ... + 1490025.

It is an arithmetic number, because the mean of its divisors is an integer number (14899990).

Almost surely, 2^80459919 is an apocalyptic number.

80459919 is a deficient number, since it is larger than the sum of its proper divisors (38740001).

80459919 is a wasteful number, since it uses less digits than its factorization.

80459919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2980006 (or 2980000 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 45.

The square root of 80459919 is about 8969.9453175591. The cubic root of 80459919 is about 431.7110818941.

The spelling of 80459919 in words is "eighty million, four hundred fifty-nine thousand, nine hundred nineteen".