80119999 has 2 divisors, whose sum is σ = 80120000. Its totient is φ = 80119998.

The previous prime is 80119981. The next prime is 80120071. The reversal of 80119999 is 99991108.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 80119999 - 2¹³ = 80111807 is a prime.

80119999 is a modest number, since divided by 9999 gives 8011 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80119499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40059999 + 40060000.

It is an arithmetic number, because the mean of its divisors is an integer number (40060000).

Almost surely, 2^80119999 is an apocalyptic number.

80119999 is a deficient number, since it is larger than the sum of its proper divisors (1).

80119999 is an equidigital number, since it uses as much as digits as its factorization.

80119999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52488, while the sum is 46.

The square root of 80119999 is about 8950.9775443803. The cubic root of 80119999 is about 431.1022720498.

It can be divided in two parts, 80119 and 999, that added together give a palindrome (81118).

The spelling of 80119999 in words is "eighty million, one hundred nineteen thousand, nine hundred ninety-nine".