409309465 has 8 divisors (see below), whose sum is σ = 493129728. Its totient is φ = 326142000.

The previous prime is 409309447. The next prime is 409309471. The reversal of 409309465 is 564903904.

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

It is not a de Polignac number, because 409309465 - 2¹⁹ = 408785177 is a prime.

It is a super-3 number, since 3×409309465³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161817 + ... + 164326.

It is an arithmetic number, because the mean of its divisors is an integer number (61641216).

Almost surely, 2^409309465 is an apocalyptic number.

It is an amenable number.

409309465 is a deficient number, since it is larger than the sum of its proper divisors (83820263).

409309465 is a wasteful number, since it uses less digits than its factorization.

409309465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326399.

The product of its (nonzero) digits is 116640, while the sum is 40.

The square root of 409309465 is about 20231.3979991497. The cubic root of 409309465 is about 742.4785801769.

The spelling of 409309465 in words is "four hundred nine million, three hundred nine thousand, four hundred sixty-five".