409356913 has 16 divisors (see below), whose sum is σ = 476421120. Its totient is φ = 344492496.

The previous prime is 409356877. The next prime is 409356929. The reversal of 409356913 is 319653904.

It is not a de Polignac number, because 409356913 - 2²⁵ = 375802481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (409356943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94918 + ... + 99136.

It is an arithmetic number, because the mean of its divisors is an integer number (29776320).

Almost surely, 2^409356913 is an apocalyptic number.

It is an amenable number.

409356913 is a deficient number, since it is larger than the sum of its proper divisors (67064207).

409356913 is a wasteful number, since it uses less digits than its factorization.

409356913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4476.

The product of its (nonzero) digits is 87480, while the sum is 40.

The square root of 409356913 is about 20232.5705979245. The cubic root of 409356913 is about 742.5072689528.

The spelling of 409356913 in words is "four hundred nine million, three hundred fifty-six thousand, nine hundred thirteen".