404894818 has 8 divisors (see below), whose sum is σ = 609949548. Its totient is φ = 201578304.

The previous prime is 404894773. The next prime is 404894821. The reversal of 404894818 is 818498404.

It can be written as a sum of positive squares in 2 ways, for example, as 389786049 + 15108769 = 19743^2 + 3887^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 433971 + ... + 434902.

Almost surely, 2^404894818 is an apocalyptic number.

404894818 is a deficient number, since it is larger than the sum of its proper divisors (205054730).

404894818 is a wasteful number, since it uses less digits than its factorization.

404894818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 869108.

The product of its (nonzero) digits is 294912, while the sum is 46.

The square root of 404894818 is about 20121.9983600039. The cubic root of 404894818 is about 739.7995670947.

The spelling of 404894818 in words is "four hundred four million, eight hundred ninety-four thousand, eight hundred eighteen".