409949858 has 8 divisors (see below), whose sum is σ = 636129180. Its totient is φ = 197906800.

The previous prime is 409949851. The next prime is 409949929. The reversal of 409949858 is 858949904.

It can be written as a sum of positive squares in 2 ways, for example, as 385219129 + 24730729 = 19627^2 + 4973^2 .

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

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 3 ways as a sum of consecutive naturals, for example, 3533993 + ... + 3534108.

Almost surely, 2^409949858 is an apocalyptic number.

409949858 is a deficient number, since it is larger than the sum of its proper divisors (226179322).

409949858 is a wasteful number, since it uses less digits than its factorization.

409949858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7068132.

The product of its (nonzero) digits is 3732480, while the sum is 56.

The square root of 409949858 is about 20247.2185250221. The cubic root of 409949858 is about 742.8655981251.

The spelling of 409949858 in words is "four hundred nine million, nine hundred forty-nine thousand, eight hundred fifty-eight".