264895399 has 2 divisors, whose sum is σ = 264895400. Its totient is φ = 264895398.

The previous prime is 264895381. The next prime is 264895409. The reversal of 264895399 is 993598462.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 264895399 - 2⁷ = 264895271 is a prime.

It is a super-2 number, since 2×264895399² = 140339144822738402, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (264895349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132447699 + 132447700.

It is an arithmetic number, because the mean of its divisors is an integer number (132447700).

Almost surely, 2^264895399 is an apocalyptic number.

264895399 is a deficient number, since it is larger than the sum of its proper divisors (1).

264895399 is an equidigital number, since it uses as much as digits as its factorization.

264895399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4199040, while the sum is 55.

The square root of 264895399 is about 16275.6074848222. The cubic root of 264895399 is about 642.2313059380.

The spelling of 264895399 in words is "two hundred sixty-four million, eight hundred ninety-five thousand, three hundred ninety-nine".