244750991 has 2 divisors, whose sum is σ = 244750992. Its totient is φ = 244750990.

The previous prime is 244750973. The next prime is 244750997. The reversal of 244750991 is 199057442.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-244750991 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (244750997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122375495 + 122375496.

It is an arithmetic number, because the mean of its divisors is an integer number (122375496).

Almost surely, 2^244750991 is an apocalyptic number.

244750991 is a deficient number, since it is larger than the sum of its proper divisors (1).

244750991 is an equidigital number, since it uses as much as digits as its factorization.

244750991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 244750991 is about 15644.5195196273. The cubic root of 244750991 is about 625.5204122069.

The spelling of 244750991 in words is "two hundred forty-four million, seven hundred fifty thousand, nine hundred ninety-one".