4244491291 has 2 divisors, whose sum is σ = 4244491292. Its totient is φ = 4244491290.

The previous prime is 4244491289. The next prime is 4244491309. The reversal of 4244491291 is 1921944424.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4244491291 - 2¹ = 4244491289 is a prime.

Together with 4244491289, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (4244491241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2122245645 + 2122245646.

It is an arithmetic number, because the mean of its divisors is an integer number (2122245646).

Almost surely, 2^4244491291 is an apocalyptic number.

4244491291 is a deficient number, since it is larger than the sum of its proper divisors (1).

4244491291 is an equidigital number, since it uses as much as digits as its factorization.

4244491291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82944, while the sum is 40.

The square root of 4244491291 is about 65149.7604830593. The cubic root of 4244491291 is about 1619.1057518253.

The spelling of 4244491291 in words is "four billion, two hundred forty-four million, four hundred ninety-one thousand, two hundred ninety-one".