264491369 has 8 divisors (see below), whose sum is σ = 274210272. Its totient is φ = 254928160.

The previous prime is 264491363. The next prime is 264491387. The reversal of 264491369 is 963194462.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 264491369 - 2¹² = 264487273 is a prime.

It is a super-2 number, since 2×264491369² = 139911368550988322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (264491363) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35459 + ... + 42264.

It is an arithmetic number, because the mean of its divisors is an integer number (34276284).

Almost surely, 2^264491369 is an apocalyptic number.

It is an amenable number.

264491369 is a deficient number, since it is larger than the sum of its proper divisors (9718903).

264491369 is an equidigital number, since it uses as much as digits as its factorization.

264491369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77847.

The product of its digits is 279936, while the sum is 44.

The square root of 264491369 is about 16263.1906156203. The cubic root of 264491369 is about 641.9046200698.

The spelling of 264491369 in words is "two hundred sixty-four million, four hundred ninety-one thousand, three hundred sixty-nine".