244239691 has 4 divisors (see below), whose sum is σ = 254858832. Its totient is φ = 233620552.

The previous prime is 244239659. The next prime is 244239707. The reversal of 244239691 is 196932442.

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 244239691 - 2⁵ = 244239659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (244239491) 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, 5309536 + ... + 5309581.

It is an arithmetic number, because the mean of its divisors is an integer number (63714708).

Almost surely, 2^244239691 is an apocalyptic number.

244239691 is a deficient number, since it is larger than the sum of its proper divisors (10619141).

244239691 is a wasteful number, since it uses less digits than its factorization.

244239691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10619140.

The product of its digits is 93312, while the sum is 40.

The square root of 244239691 is about 15628.1697904777. The cubic root of 244239691 is about 625.0845248884.

The spelling of 244239691 in words is "two hundred forty-four million, two hundred thirty-nine thousand, six hundred ninety-one".