223909379 has 2 divisors, whose sum is σ = 223909380. Its totient is φ = 223909378.

The previous prime is 223909369. The next prime is 223909391. The reversal of 223909379 is 973909322.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223909379 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (223909339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111954689 + 111954690.

It is an arithmetic number, because the mean of its divisors is an integer number (111954690).

Almost surely, 2^223909379 is an apocalyptic number.

223909379 is a deficient number, since it is larger than the sum of its proper divisors (1).

223909379 is an equidigital number, since it uses as much as digits as its factorization.

223909379 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 183708, while the sum is 44.

The square root of 223909379 is about 14963.6018057151. The cubic root of 223909379 is about 607.2358848971.

The spelling of 223909379 in words is "two hundred twenty-three million, nine hundred nine thousand, three hundred seventy-nine".