264893869 has 2 divisors, whose sum is σ = 264893870. Its totient is φ = 264893868.

The previous prime is 264893861. The next prime is 264893899. The reversal of 264893869 is 968398462.

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., 202720644 + 62173225 = 14238^2 + 7885^2 .

It is a cyclic number.

It is not a de Polignac number, because 264893869 - 2³ = 264893861 is a prime.

It is a super-2 number, since 2×264893869² = 140337523667578322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (264893861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132446934 + 132446935.

It is an arithmetic number, because the mean of its divisors is an integer number (132446935).

Almost surely, 2^264893869 is an apocalyptic number.

It is an amenable number.

264893869 is a deficient number, since it is larger than the sum of its proper divisors (1).

264893869 is an equidigital number, since it uses as much as digits as its factorization.

264893869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4478976, while the sum is 55.

The square root of 264893869 is about 16275.5604819005. The cubic root of 264893869 is about 642.2300694553.

The spelling of 264893869 in words is "two hundred sixty-four million, eight hundred ninety-three thousand, eight hundred sixty-nine".