408618349 has 4 divisors (see below), whose sum is σ = 409163200. Its totient is φ = 408073500.

The previous prime is 408618337. The next prime is 408618359. The reversal of 408618349 is 943816804.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-408618349 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 (408618359) 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, 271299 + ... + 272800.

It is an arithmetic number, because the mean of its divisors is an integer number (102290800).

Almost surely, 2^408618349 is an apocalyptic number.

It is an amenable number.

408618349 is a deficient number, since it is larger than the sum of its proper divisors (544851).

408618349 is an equidigital number, since it uses as much as digits as its factorization.

408618349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544850.

The product of its (nonzero) digits is 165888, while the sum is 43.

The square root of 408618349 is about 20214.3105002372. The cubic root of 408618349 is about 742.0604548937.

The spelling of 408618349 in words is "four hundred eight million, six hundred eighteen thousand, three hundred forty-nine".