404028171 has 12 divisors (see below), whose sum is σ = 617925672. Its totient is φ = 253507776.

The previous prime is 404028167. The next prime is 404028181. The reversal of 404028171 is 171820404.

It is not a de Polignac number, because 404028171 - 2² = 404028167 is a prime.

It is not an unprimeable number, because it can be changed into a prime (404028151) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1320201 + ... + 1320506.

It is an arithmetic number, because the mean of its divisors is an integer number (51493806).

Almost surely, 2^404028171 is an apocalyptic number.

404028171 is a deficient number, since it is larger than the sum of its proper divisors (213897501).

404028171 is a wasteful number, since it uses less digits than its factorization.

404028171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2640730 (or 2640727 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 404028171 is about 20100.4520098430. The cubic root of 404028171 is about 739.2713615521.

Adding to 404028171 its reverse (171820404), we get a palindrome (575848575).

The spelling of 404028171 in words is "four hundred four million, twenty-eight thousand, one hundred seventy-one".