249253999 has 2 divisors, whose sum is σ = 249254000. Its totient is φ = 249253998.

The previous prime is 249253987. The next prime is 249254011. The reversal of 249253999 is 999352942.

It is a balanced prime because it is at equal distance from previous prime (249253987) and next prime (249254011).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-249253999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (249253969) 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, 124626999 + 124627000.

It is an arithmetic number, because the mean of its divisors is an integer number (124627000).

Almost surely, 2^249253999 is an apocalyptic number.

249253999 is a deficient number, since it is larger than the sum of its proper divisors (1).

249253999 is an equidigital number, since it uses as much as digits as its factorization.

249253999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1574640, while the sum is 52.

The square root of 249253999 is about 15787.7800529397. The cubic root of 249253999 is about 629.3332990762. Note that the first 3 decimals are identical.

The spelling of 249253999 in words is "two hundred forty-nine million, two hundred fifty-three thousand, nine hundred ninety-nine".