249118223 has 2 divisors, whose sum is σ = 249118224. Its totient is φ = 249118222.

The previous prime is 249118171. The next prime is 249118231. The reversal of 249118223 is 322811942.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 249118223 - 2¹⁸ = 248856079 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 249118223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (249118273) 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, 124559111 + 124559112.

It is an arithmetic number, because the mean of its divisors is an integer number (124559112).

Almost surely, 2^249118223 is an apocalyptic number.

249118223 is a deficient number, since it is larger than the sum of its proper divisors (1).

249118223 is an equidigital number, since it uses as much as digits as its factorization.

249118223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 32.

The square root of 249118223 is about 15783.4794326219. The cubic root of 249118223 is about 629.2190061882.

The spelling of 249118223 in words is "two hundred forty-nine million, one hundred eighteen thousand, two hundred twenty-three".