404314872187 has 2 divisors, whose sum is σ = 404314872188. Its totient is φ = 404314872186.

The previous prime is 404314872173. The next prime is 404314872193. The reversal of 404314872187 is 781278413404.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-404314872187 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 404314872187.

It is not a weakly prime, because it can be changed into another prime (404314872127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202157436093 + 202157436094.

It is an arithmetic number, because the mean of its divisors is an integer number (202157436094).

Almost surely, 2^404314872187 is an apocalyptic number.

404314872187 is a deficient number, since it is larger than the sum of its proper divisors (1).

404314872187 is an equidigital number, since it uses as much as digits as its factorization.

404314872187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1204224, while the sum is 49.

The spelling of 404314872187 in words is "four hundred four billion, three hundred fourteen million, eight hundred seventy-two thousand, one hundred eighty-seven".