249923 has 2 divisors, whose sum is σ = 249924. Its totient is φ = 249922.

The previous prime is 249911. The next prime is 249943. The reversal of 249923 is 329942.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 249923 - 2⁶ = 249859 is a prime.

It is a d-powerful number, because it can be written as 2³ + 4² + 9³ + 9⁵ + 2¹⁷ + 3¹⁰ .

It is a plaindrome in base 13.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 249923.

It is not a weakly prime, because it can be changed into another prime (249943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124961 + 124962.

It is an arithmetic number, because the mean of its divisors is an integer number (124962).

2²⁴⁹⁹²³ is an apocalyptic number.

249923 is a deficient number, since it is larger than the sum of its proper divisors (1).

249923 is an equidigital number, since it uses as much as digits as its factorization.

249923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 29.

The square root of 249923 is about 499.9229940701. The cubic root of 249923 is about 62.9895842359.

The spelling of 249923 in words is "two hundred forty-nine thousand, nine hundred twenty-three".