409890613 has 8 divisors (see below), whose sum is σ = 466595136. Its totient is φ = 356426400.

The previous prime is 409890601. The next prime is 409890617. The reversal of 409890613 is 316098904.

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

It is not a de Polignac number, because 409890613 - 2⁹ = 409890101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (409890617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 809808 + ... + 810313.

It is an arithmetic number, because the mean of its divisors is an integer number (58324392).

Almost surely, 2^409890613 is an apocalyptic number.

It is an amenable number.

409890613 is a deficient number, since it is larger than the sum of its proper divisors (56704523).

409890613 is a wasteful number, since it uses less digits than its factorization.

409890613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1620155.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 409890613 is about 20245.7554316948. The cubic root of 409890613 is about 742.8298106649.

The spelling of 409890613 in words is "four hundred nine million, eight hundred ninety thousand, six hundred thirteen".