80499479 has 2 divisors, whose sum is σ = 80499480. Its totient is φ = 80499478.

The previous prime is 80499469. The next prime is 80499481. The reversal of 80499479 is 97499408.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80499479 - 2¹² = 80495383 is a prime.

It is a super-2 number, since 2×80499479² = 12960332238542882, which contains 22 as substring.

Together with 80499481, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80499469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40249739 + 40249740.

It is an arithmetic number, because the mean of its divisors is an integer number (40249740).

Almost surely, 2^80499479 is an apocalyptic number.

80499479 is a deficient number, since it is larger than the sum of its proper divisors (1).

80499479 is an equidigital number, since it uses as much as digits as its factorization.

80499479 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 653184, while the sum is 50.

The square root of 80499479 is about 8972.1501882213. The cubic root of 80499479 is about 431.7818239164.

The spelling of 80499479 in words is "eighty million, four hundred ninety-nine thousand, four hundred seventy-nine".