264430409 has 8 divisors (see below), whose sum is σ = 269774280. Its totient is φ = 259099776.

The previous prime is 264430399. The next prime is 264430433. The reversal of 264430409 is 904034462.

It can be written as a sum of positive squares in 4 ways, for example, as 182925625 + 81504784 = 13525^2 + 9028^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 264430409 - 2¹⁶ = 264364873 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (264430469) 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, 43637 + ... + 49325.

It is an arithmetic number, because the mean of its divisors is an integer number (33721785).

Almost surely, 2^264430409 is an apocalyptic number.

It is an amenable number.

264430409 is a deficient number, since it is larger than the sum of its proper divisors (5343871).

264430409 is an equidigital number, since it uses as much as digits as its factorization.

264430409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6619.

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 264430409 is about 16261.3163366315. The cubic root of 264430409 is about 641.8553008647.

The spelling of 264430409 in words is "two hundred sixty-four million, four hundred thirty thousand, four hundred nine".