80499481 has 2 divisors, whose sum is σ = 80499482. Its totient is φ = 80499480.

The previous prime is 80499479. The next prime is 80499491. The reversal of 80499481 is 18499408.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70291456 + 10208025 = 8384^2 + 3195^2 .

It is a cyclic number.

It is not a de Polignac number, because 80499481 - 2¹ = 80499479 is a prime.

It is a super-2 number, since 2×80499481² = 12960332882538722, which contains 22 as substring.

Together with 80499479, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (80499401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40249740 + 40249741.

It is an arithmetic number, because the mean of its divisors is an integer number (40249741).

Almost surely, 2^80499481 is an apocalyptic number.

It is an amenable number.

80499481 is a deficient number, since it is larger than the sum of its proper divisors (1).

80499481 is an equidigital number, since it uses as much as digits as its factorization.

80499481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 43.

The square root of 80499481 is about 8972.1502996773. The cubic root of 80499481 is about 431.7818274923.

The spelling of 80499481 in words is "eighty million, four hundred ninety-nine thousand, four hundred eighty-one".