264402493 has 4 divisors (see below), whose sum is σ = 267749440. Its totient is φ = 261055548.

The previous prime is 264402491. The next prime is 264402539. The reversal of 264402493 is 394204462.

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, and also an emirpimes, since its reverse is a distinct semiprime: 394204462 = 2 ⋅197102231.

It is a cyclic number.

It is not a de Polignac number, because 264402493 - 2¹ = 264402491 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264402491) 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 in 3 ways as a sum of consecutive naturals, for example, 1673355 + ... + 1673512.

It is an arithmetic number, because the mean of its divisors is an integer number (66937360).

Almost surely, 2^264402493 is an apocalyptic number.

It is an amenable number.

264402493 is a deficient number, since it is larger than the sum of its proper divisors (3346947).

264402493 is an equidigital number, since it uses as much as digits as its factorization.

264402493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3346946.

The product of its (nonzero) digits is 41472, while the sum is 34.

The square root of 264402493 is about 16260.4579578805. The cubic root of 264402493 is about 641.8327131156.

The spelling of 264402493 in words is "two hundred sixty-four million, four hundred two thousand, four hundred ninety-three".