244221907 has 2 divisors, whose sum is σ = 244221908. Its totient is φ = 244221906.

The previous prime is 244221899. The next prime is 244222019. The reversal of 244221907 is 709122442.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 244221907 - 2³ = 244221899 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (244201907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122110953 + 122110954.

It is an arithmetic number, because the mean of its divisors is an integer number (122110954).

Almost surely, 2^244221907 is an apocalyptic number.

244221907 is a deficient number, since it is larger than the sum of its proper divisors (1).

244221907 is an equidigital number, since it uses as much as digits as its factorization.

244221907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 244221907 is about 15627.6008075456. The cubic root of 244221907 is about 625.0693529440.

The spelling of 244221907 in words is "two hundred forty-four million, two hundred twenty-one thousand, nine hundred seven".