82904491 has 2 divisors, whose sum is σ = 82904492. Its totient is φ = 82904490.

The previous prime is 82904483. The next prime is 82904513. The reversal of 82904491 is 19440928.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82904491 - 2³ = 82904483 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 82904491.

It is not a weakly prime, because it can be changed into another prime (82904401) 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, 41452245 + 41452246.

It is an arithmetic number, because the mean of its divisors is an integer number (41452246).

Almost surely, 2^82904491 is an apocalyptic number.

82904491 is a deficient number, since it is larger than the sum of its proper divisors (1).

82904491 is an equidigital number, since it uses as much as digits as its factorization.

82904491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 82904491 is about 9105.1903329914. The cubic root of 82904491 is about 436.0396868596.

The spelling of 82904491 in words is "eighty-two million, nine hundred four thousand, four hundred ninety-one".