80299999 has 8 divisors (see below), whose sum is σ = 86700320. Its totient is φ = 73931616.

The previous prime is 80299943. The next prime is 80300009. The reversal of 80299999 is 99999208.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80299999 is a prime.

It is a Duffinian number.

80299999 is a modest number, since divided by 9999 gives 8029 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80299939) 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, 2619 + ... + 12940.

It is an arithmetic number, because the mean of its divisors is an integer number (10837540).

Almost surely, 2^80299999 is an apocalyptic number.

80299999 is a deficient number, since it is larger than the sum of its proper divisors (6400321).

80299999 is a wasteful number, since it uses less digits than its factorization.

80299999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15969.

The product of its (nonzero) digits is 944784, while the sum is 55.

The square root of 80299999 is about 8961.0266710908. The cubic root of 80299999 is about 431.4248730263.

The spelling of 80299999 in words is "eighty million, two hundred ninety-nine thousand, nine hundred ninety-nine".