409481613 has 12 divisors (see below), whose sum is σ = 598120380. Its totient is φ = 269919936.

The previous prime is 409481557. The next prime is 409481641. The reversal of 409481613 is 316184904.

It can be written as a sum of positive squares in 2 ways, for example, as 165559689 + 243921924 = 12867^2 + 15618^2 .

It is not a de Polignac number, because 409481613 - 2⁸ = 409481357 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (409481663) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 254806 + ... + 256407.

It is an arithmetic number, because the mean of its divisors is an integer number (49843365).

Almost surely, 2^409481613 is an apocalyptic number.

It is an amenable number.

409481613 is a deficient number, since it is larger than the sum of its proper divisors (188638767).

409481613 is a wasteful number, since it uses less digits than its factorization.

409481613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511308 (or 511305 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 409481613 is about 20235.6520280420. The cubic root of 409481613 is about 742.5826565126.

The spelling of 409481613 in words is "four hundred nine million, four hundred eighty-one thousand, six hundred thirteen".