264090493 has 2 divisors, whose sum is σ = 264090494. Its totient is φ = 264090492.

The previous prime is 264090473. The next prime is 264090499. The reversal of 264090493 is 394090462.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 262342809 + 1747684 = 16197^2 + 1322^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-264090493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (264090499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132045246 + 132045247.

It is an arithmetic number, because the mean of its divisors is an integer number (132045247).

Almost surely, 2^264090493 is an apocalyptic number.

It is an amenable number.

264090493 is a deficient number, since it is larger than the sum of its proper divisors (1).

264090493 is an equidigital number, since it uses as much as digits as its factorization.

264090493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 37.

The square root of 264090493 is about 16250.8613002511. The cubic root of 264090493 is about 641.5801554552.

The spelling of 264090493 in words is "two hundred sixty-four million, ninety thousand, four hundred ninety-three".