864464409 has 6 divisors (see below), whose sum is σ = 1248670826. Its totient is φ = 576309600.

The previous prime is 864464369. The next prime is 864464417. The reversal of 864464409 is 904464468.

864464409 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 576144009 + 288320400 = 24003^2 + 16980^2 .

It is not a de Polignac number, because 864464409 - 2¹⁵ = 864431641 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 (864464309) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 48025792 + ... + 48025809.

Almost surely, 2^864464409 is an apocalyptic number.

It is an amenable number.

864464409 is a deficient number, since it is larger than the sum of its proper divisors (384206417).

864464409 is a wasteful number, since it uses less digits than its factorization.

864464409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96051607 (or 96051604 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 45.

The square root of 864464409 is about 29401.7756096464. The cubic root of 864464409 is about 952.6112495350.

The spelling of 864464409 in words is "eight hundred sixty-four million, four hundred sixty-four thousand, four hundred nine".