409949859 has 32 divisors (see below), whose sum is σ = 627222528. Its totient is φ = 235872000.

The previous prime is 409949851. The next prime is 409949929. The reversal of 409949859 is 958949904.

It is not a de Polignac number, because 409949859 - 2³ = 409949851 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 409949799 and 409949808.

It is not an unprimeable number, because it can be changed into a prime (409949851) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50439 + ... + 57999.

It is an arithmetic number, because the mean of its divisors is an integer number (19600704).

Almost surely, 2^409949859 is an apocalyptic number.

409949859 is a deficient number, since it is larger than the sum of its proper divisors (217272669).

409949859 is a wasteful number, since it uses less digits than its factorization.

409949859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7659.

The product of its (nonzero) digits is 4199040, while the sum is 57.

The square root of 409949859 is about 20247.2185497169. The cubic root of 409949859 is about 742.8655987291.

The spelling of 409949859 in words is "four hundred nine million, nine hundred forty-nine thousand, eight hundred fifty-nine".