409805434 has 32 divisors (see below), whose sum is σ = 666352656. Its totient is φ = 188298240.

The previous prime is 409805423. The next prime is 409805453. The reversal of 409805434 is 434508904.

It can be written as a sum of positive squares in 8 ways, for example, as 190854225 + 218951209 = 13815^2 + 14797^2 .

It is a junction number, because it is equal to n+sod(n) for n = 409805393 and 409805402.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 498744 + ... + 499564.

Almost surely, 2^409805434 is an apocalyptic number.

409805434 is a deficient number, since it is larger than the sum of its proper divisors (256547222).

409805434 is a wasteful number, since it uses less digits than its factorization.

409805434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1170.

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 409805434 is about 20243.6516962726. The cubic root of 409805434 is about 742.7783515017.

The spelling of 409805434 in words is "four hundred nine million, eight hundred five thousand, four hundred thirty-four".