409625449 has 8 divisors (see below), whose sum is σ = 414203328. Its totient is φ = 405073200.

The previous prime is 409625441. The next prime is 409625477. The reversal of 409625449 is 944526904.

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 409625449 - 2³ = 409625441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (409625441) 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, 26674 + ... + 39124.

It is an arithmetic number, because the mean of its divisors is an integer number (51775416).

Almost surely, 2^409625449 is an apocalyptic number.

It is an amenable number.

409625449 is a deficient number, since it is larger than the sum of its proper divisors (4577879).

409625449 is a wasteful number, since it uses less digits than its factorization.

409625449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12815.

The product of its (nonzero) digits is 311040, while the sum is 43.

The square root of 409625449 is about 20239.2057403447. The cubic root of 409625449 is about 742.6695937619.

The spelling of 409625449 in words is "four hundred nine million, six hundred twenty-five thousand, four hundred forty-nine".