223877891 has 2 divisors, whose sum is σ = 223877892. Its totient is φ = 223877890.

The previous prime is 223877867. The next prime is 223877897. The reversal of 223877891 is 198778322.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 223877891 - 2¹⁸ = 223615747 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (223877897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111938945 + 111938946.

It is an arithmetic number, because the mean of its divisors is an integer number (111938946).

Almost surely, 2^223877891 is an apocalyptic number.

223877891 is a deficient number, since it is larger than the sum of its proper divisors (1).

223877891 is an equidigital number, since it uses as much as digits as its factorization.

223877891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 338688, while the sum is 47.

The square root of 223877891 is about 14962.5496156237. The cubic root of 223877891 is about 607.2074187084.

The spelling of 223877891 in words is "two hundred twenty-three million, eight hundred seventy-seven thousand, eight hundred ninety-one".