408841613 has 4 divisors (see below), whose sum is σ = 408882528. Its totient is φ = 408800700.

The previous prime is 408841607. The next prime is 408841633. The reversal of 408841613 is 316148804.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 408841613 - 2⁴ = 408841597 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 (408841603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5570 + ... + 29132.

It is an arithmetic number, because the mean of its divisors is an integer number (102220632).

Almost surely, 2^408841613 is an apocalyptic number.

It is an amenable number.

408841613 is a deficient number, since it is larger than the sum of its proper divisors (40915).

408841613 is a wasteful number, since it uses less digits than its factorization.

408841613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40914.

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 408841613 is about 20219.8321704212. The cubic root of 408841613 is about 742.1955811638.

The spelling of 408841613 in words is "four hundred eight million, eight hundred forty-one thousand, six hundred thirteen".