249863 has 2 divisors, whose sum is σ = 249864. Its totient is φ = 249862.

The previous prime is 249859. The next prime is 249871. The reversal of 249863 is 368942.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 249863 - 2² = 249859 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (249833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124931 + 124932.

It is an arithmetic number, because the mean of its divisors is an integer number (124932).

2²⁴⁹⁸⁶³ is an apocalyptic number.

249863 is a deficient number, since it is larger than the sum of its proper divisors (1).

249863 is an equidigital number, since it uses as much as digits as its factorization.

249863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 32.

The square root of 249863 is about 499.8629812259. The cubic root of 249863 is about 62.9845431132.

The spelling of 249863 in words is "two hundred forty-nine thousand, eight hundred sixty-three".