264895993 has 4 divisors (see below), whose sum is σ = 265325940. Its totient is φ = 264466048.

The previous prime is 264895963. The next prime is 264895997. The reversal of 264895993 is 399598462.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 128777104 + 136118889 = 11348^2 + 11667^2 .

It is a cyclic number.

It is not a de Polignac number, because 264895993 - 2¹³ = 264887801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (264895997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214048 + ... + 215281.

It is an arithmetic number, because the mean of its divisors is an integer number (66331485).

Almost surely, 2^264895993 is an apocalyptic number.

It is an amenable number.

264895993 is a deficient number, since it is larger than the sum of its proper divisors (429947).

264895993 is an equidigital number, since it uses as much as digits as its factorization.

264895993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429946.

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

The square root of 264895993 is about 16275.6257329787. The cubic root of 264895993 is about 642.2317859830.

The spelling of 264895993 in words is "two hundred sixty-four million, eight hundred ninety-five thousand, nine hundred ninety-three".