249990341 has 2 divisors, whose sum is σ = 249990342. Its totient is φ = 249990340.

The previous prime is 249990319. The next prime is 249990343. The reversal of 249990341 is 143099942.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 223622116 + 26368225 = 14954^2 + 5135^2 .

It is a cyclic number.

It is not a de Polignac number, because 249990341 - 2¹⁴ = 249973957 is a prime.

It is a Sophie Germain prime.

Together with 249990343, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (249990343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124995170 + 124995171.

It is an arithmetic number, because the mean of its divisors is an integer number (124995171).

Almost surely, 2^249990341 is an apocalyptic number.

It is an amenable number.

249990341 is a deficient number, since it is larger than the sum of its proper divisors (1).

249990341 is an equidigital number, since it uses as much as digits as its factorization.

249990341 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69984, while the sum is 41.

The square root of 249990341 is about 15811.0828534924. The cubic root of 249990341 is about 629.9524117913.

The spelling of 249990341 in words is "two hundred forty-nine million, nine hundred ninety thousand, three hundred forty-one".