244144991 has 2 divisors, whose sum is σ = 244144992. Its totient is φ = 244144990.

The previous prime is 244144987. The next prime is 244145053. The reversal of 244144991 is 199441442.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 244144991 - 2² = 244144987 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (244144921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122072495 + 122072496.

It is an arithmetic number, because the mean of its divisors is an integer number (122072496).

Almost surely, 2^244144991 is an apocalyptic number.

244144991 is a deficient number, since it is larger than the sum of its proper divisors (1).

244144991 is an equidigital number, since it uses as much as digits as its factorization.

244144991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 38.

The square root of 244144991 is about 15625.1397113754. The cubic root of 244144991 is about 625.0037256311.

The spelling of 244144991 in words is "two hundred forty-four million, one hundred forty-four thousand, nine hundred ninety-one".