223947967 has 2 divisors, whose sum is σ = 223947968. Its totient is φ = 223947966.

The previous prime is 223947961. The next prime is 223947979. The reversal of 223947967 is 769749322.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 223947967 - 2³ = 223947959 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 223947967.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223947961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111973983 + 111973984.

It is an arithmetic number, because the mean of its divisors is an integer number (111973984).

Almost surely, 2^223947967 is an apocalyptic number.

223947967 is a deficient number, since it is larger than the sum of its proper divisors (1).

223947967 is an equidigital number, since it uses as much as digits as its factorization.

223947967 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1143072, while the sum is 49.

The square root of 223947967 is about 14964.8911456115. The cubic root of 223947967 is about 607.2707660806.

The spelling of 223947967 in words is "two hundred twenty-three million, nine hundred forty-seven thousand, nine hundred sixty-seven".