80342999 has 4 divisors (see below), whose sum is σ = 87646920. Its totient is φ = 73039080.

The previous prime is 80342993. The next prime is 80343007. The reversal of 80342999 is 99924308.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 80342999 - 2²⁴ = 63565783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80342993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3651944 + ... + 3651965.

It is an arithmetic number, because the mean of its divisors is an integer number (21911730).

Almost surely, 2^80342999 is an apocalyptic number.

80342999 is a deficient number, since it is larger than the sum of its proper divisors (7303921).

80342999 is a wasteful number, since it uses less digits than its factorization.

80342999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7303920.

The product of its (nonzero) digits is 139968, while the sum is 44.

The square root of 80342999 is about 8963.4256286311. The cubic root of 80342999 is about 431.5018674613.

It can be divided in two parts, 8034299 and 9, that added together give a palindrome (8034308).

The spelling of 80342999 in words is "eighty million, three hundred forty-two thousand, nine hundred ninety-nine".