222401887 has 4 divisors (see below), whose sum is σ = 222855336. Its totient is φ = 221948440.

The previous prime is 222401869. The next prime is 222401909. The reversal of 222401887 is 788104222.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222401887 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 (222401687) 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, 225988 + ... + 226969.

It is an arithmetic number, because the mean of its divisors is an integer number (55713834).

Almost surely, 2^222401887 is an apocalyptic number.

222401887 is a deficient number, since it is larger than the sum of its proper divisors (453449).

222401887 is an equidigital number, since it uses as much as digits as its factorization.

222401887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453448.

The product of its (nonzero) digits is 14336, while the sum is 34.

The square root of 222401887 is about 14913.1447723141. The cubic root of 222401887 is about 605.8700565892.

The spelling of 222401887 in words is "two hundred twenty-two million, four hundred one thousand, eight hundred eighty-seven".