404001897 has 16 divisors (see below), whose sum is σ = 580944000. Its totient is φ = 248257152.

The previous prime is 404001847. The next prime is 404001943. The reversal of 404001897 is 798100404.

It is not a de Polignac number, because 404001897 - 2¹⁵ = 403969129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (404001847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21229 + ... + 35477.

It is an arithmetic number, because the mean of its divisors is an integer number (36309000).

Almost surely, 2^404001897 is an apocalyptic number.

It is an amenable number.

404001897 is a deficient number, since it is larger than the sum of its proper divisors (176942103).

404001897 is a wasteful number, since it uses less digits than its factorization.

404001897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14992.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 404001897 is about 20099.7984318251. The cubic root of 404001897 is about 739.2553362365.

The spelling of 404001897 in words is "four hundred four million, one thousand, eight hundred ninety-seven".