264491089 has 4 divisors (see below), whose sum is σ = 266573824. Its totient is φ = 262408356.

The previous prime is 264491081. The next prime is 264491119. The reversal of 264491089 is 980194462.

264491089 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 264491089 - 2³ = 264491081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (264491081) 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, 1041177 + ... + 1041430.

It is an arithmetic number, because the mean of its divisors is an integer number (66643456).

Almost surely, 2^264491089 is an apocalyptic number.

It is an amenable number.

264491089 is a deficient number, since it is larger than the sum of its proper divisors (2082735).

264491089 is a wasteful number, since it uses less digits than its factorization.

264491089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2082734.

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 264491089 is about 16263.1820072211. The cubic root of 264491089 is about 641.9043935554.

The spelling of 264491089 in words is "two hundred sixty-four million, four hundred ninety-one thousand, eighty-nine".