404444887 has 16 divisors (see below), whose sum is σ = 530784000. Its totient is φ = 298563840.

The previous prime is 404444863. The next prime is 404444987. The reversal of 404444887 is 788444404.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-404444887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404444987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136762 + ... + 139687.

It is an arithmetic number, because the mean of its divisors is an integer number (33174000).

Almost surely, 2^404444887 is an apocalyptic number.

404444887 is a deficient number, since it is larger than the sum of its proper divisors (126339113).

404444887 is a wasteful number, since it uses less digits than its factorization.

404444887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276486.

The product of its (nonzero) digits is 458752, while the sum is 43.

The square root of 404444887 is about 20110.8151749252. The cubic root of 404444887 is about 739.5254365349.

The spelling of 404444887 in words is "four hundred four million, four hundred forty-four thousand, eight hundred eighty-seven".