77490499 has 2 divisors, whose sum is σ = 77490500. Its totient is φ = 77490498.

The previous prime is 77490481. The next prime is 77490521. The reversal of 77490499 is 99409477.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 77490499 - 2¹⁷ = 77359427 is a prime.

It is not a weakly prime, because it can be changed into another prime (77490599) 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, 38745249 + 38745250.

It is an arithmetic number, because the mean of its divisors is an integer number (38745250).

Almost surely, 2^77490499 is an apocalyptic number.

77490499 is a deficient number, since it is larger than the sum of its proper divisors (1).

77490499 is an equidigital number, since it uses as much as digits as its factorization.

77490499 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 571536, while the sum is 49.

The square root of 77490499 is about 8802.8687937513. The cubic root of 77490499 is about 426.3335258268. Note that the first 3 decimals are identical.

The spelling of 77490499 in words is "seventy-seven million, four hundred ninety thousand, four hundred ninety-nine".