409912465 has 16 divisors (see below), whose sum is σ = 511007616. Its totient is φ = 315414400.

The previous prime is 409912429. The next prime is 409912469. The reversal of 409912465 is 564219904.

It is not a de Polignac number, because 409912465 - 2²⁵ = 376358033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (409912469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 474 + ... + 28636.

It is an arithmetic number, because the mean of its divisors is an integer number (31937976).

Almost surely, 2^409912465 is an apocalyptic number.

It is an amenable number.

409912465 is a deficient number, since it is larger than the sum of its proper divisors (101095151).

409912465 is a wasteful number, since it uses less digits than its factorization.

409912465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28280.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 409912465 is about 20246.2950931769. The cubic root of 409912465 is about 742.8430109579.

The spelling of 409912465 in words is "four hundred nine million, nine hundred twelve thousand, four hundred sixty-five".