244242643 has 4 divisors (see below), whose sum is σ = 244312848. Its totient is φ = 244172440.

The previous prime is 244242629. The next prime is 244242659. The reversal of 244242643 is 346242442.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 244242643 - 2¹³ = 244234451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (244242613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29596 + ... + 36937.

It is an arithmetic number, because the mean of its divisors is an integer number (61078212).

Almost surely, 2^244242643 is an apocalyptic number.

244242643 is a deficient number, since it is larger than the sum of its proper divisors (70205).

244242643 is an equidigital number, since it uses as much as digits as its factorization.

244242643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70204.

The product of its digits is 36864, while the sum is 31.

The square root of 244242643 is about 15628.2642350326. The cubic root of 244242643 is about 625.0870432370.

The spelling of 244242643 in words is "two hundred forty-four million, two hundred forty-two thousand, six hundred forty-three".