409025409 has 8 divisors (see below), whose sum is σ = 587318592. Its totient is φ = 251707920.

The previous prime is 409025381. The next prime is 409025437. The reversal of 409025409 is 904520904.

It is an interprime number because it is at equal distance from previous prime (409025381) and next prime (409025437).

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

It is not a de Polignac number, because 409025409 - 2¹² = 409021313 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 409025409.

It is not an unprimeable number, because it can be changed into a prime (409025509) 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, 5243877 + ... + 5243954.

It is an arithmetic number, because the mean of its divisors is an integer number (73414824).

Almost surely, 2^409025409 is an apocalyptic number.

It is an amenable number.

409025409 is a deficient number, since it is larger than the sum of its proper divisors (178293183).

409025409 is a wasteful number, since it uses less digits than its factorization.

409025409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10487847.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 409025409 is about 20224.3766034951. The cubic root of 409025409 is about 742.3067832677.

The spelling of 409025409 in words is "four hundred nine million, twenty-five thousand, four hundred nine".