404314872191 has 4 divisors (see below), whose sum is σ = 406890126312. Its totient is φ = 401739618072.

The previous prime is 404314872187. The next prime is 404314872193. The reversal of 404314872191 is 191278413404.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 404314872191 - 2² = 404314872187 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404314872193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1287626825 + ... + 1287627138.

It is an arithmetic number, because the mean of its divisors is an integer number (101722531578).

Almost surely, 2^404314872191 is an apocalyptic number.

404314872191 is a deficient number, since it is larger than the sum of its proper divisors (2575254121).

404314872191 is a wasteful number, since it uses less digits than its factorization.

404314872191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2575254120.

The product of its (nonzero) digits is 193536, while the sum is 44.

The spelling of 404314872191 in words is "four hundred four billion, three hundred fourteen million, eight hundred seventy-two thousand, one hundred ninety-one".