264630889 has 2 divisors, whose sum is σ = 264630890. Its totient is φ = 264630888.

The previous prime is 264630881. The next prime is 264630929. The reversal of 264630889 is 988036462.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 179345664 + 85285225 = 13392^2 + 9235^2 .

It is a cyclic number.

It is not a de Polignac number, because 264630889 - 2³ = 264630881 is a prime.

It is not a weakly prime, because it can be changed into another prime (264630881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132315444 + 132315445.

It is an arithmetic number, because the mean of its divisors is an integer number (132315445).

Almost surely, 2^264630889 is an apocalyptic number.

It is an amenable number.

264630889 is a deficient number, since it is larger than the sum of its proper divisors (1).

264630889 is an equidigital number, since it uses as much as digits as its factorization.

264630889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 497664, while the sum is 46.

The square root of 264630889 is about 16267.4794913041. The cubic root of 264630889 is about 642.0174691080.

The spelling of 264630889 in words is "two hundred sixty-four million, six hundred thirty thousand, eight hundred eighty-nine".