264042393 has 4 divisors (see below), whose sum is σ = 352056528. Its totient is φ = 176028260.

The previous prime is 264042379. The next prime is 264042409. The reversal of 264042393 is 393240462.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 264042393 - 2⁸ = 264042137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (264042313) 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, 44007063 + ... + 44007068.

It is an arithmetic number, because the mean of its divisors is an integer number (88014132).

Almost surely, 2^264042393 is an apocalyptic number.

It is an amenable number.

264042393 is a deficient number, since it is larger than the sum of its proper divisors (88014135).

264042393 is an equidigital number, since it uses as much as digits as its factorization.

264042393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88014134.

The product of its (nonzero) digits is 31104, while the sum is 33.

The square root of 264042393 is about 16249.3813112992. The cubic root of 264042393 is about 641.5412017883.

The spelling of 264042393 in words is "two hundred sixty-four million, forty-two thousand, three hundred ninety-three".