408964889 has 8 divisors (see below), whose sum is σ = 410664192. Its totient is φ = 407270160.

The previous prime is 408964849. The next prime is 408964921. The reversal of 408964889 is 988469804.

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

It is a cyclic number.

It is not a de Polignac number, because 408964889 - 2¹² = 408960793 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (408964819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 412184 + ... + 413174.

It is an arithmetic number, because the mean of its divisors is an integer number (51333024).

Almost surely, 2^408964889 is an apocalyptic number.

It is an amenable number.

408964889 is a deficient number, since it is larger than the sum of its proper divisors (1699303).

408964889 is an equidigital number, since it uses as much as digits as its factorization.

408964889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2287.

The product of its (nonzero) digits is 3981312, while the sum is 56.

The square root of 408964889 is about 20222.8803339188. The cubic root of 408964889 is about 742.2701705281.

The spelling of 408964889 in words is "four hundred eight million, nine hundred sixty-four thousand, eight hundred eighty-nine".