409538613 has 16 divisors (see below), whose sum is σ = 614909952. Its totient is φ = 240198000.

The previous prime is 409538611. The next prime is 409538659. The reversal of 409538613 is 316835904.

It is not a de Polignac number, because 409538613 - 2¹ = 409538611 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (409538611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 199143 + ... + 201188.

It is an arithmetic number, because the mean of its divisors is an integer number (38431872).

Almost surely, 2^409538613 is an apocalyptic number.

It is an amenable number.

409538613 is a deficient number, since it is larger than the sum of its proper divisors (205371339).

409538613 is a wasteful number, since it uses less digits than its factorization.

409538613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400376.

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 409538613 is about 20237.0603843542. The cubic root of 409538613 is about 742.6171108456.

The spelling of 409538613 in words is "four hundred nine million, five hundred thirty-eight thousand, six hundred thirteen".