244391 has 4 divisors (see below), whose sum is σ = 279312. Its totient is φ = 209472.

The previous prime is 244381. The next prime is 244393. The reversal of 244391 is 193442.

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 244391 - 2¹⁰ = 243367 is a prime.

It is a d-powerful number, because it can be written as 2 + 4⁶ + 3¹¹ + 4⁶ + 9⁵ + 1 .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (244393) 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, 17450 + ... + 17463.

It is an arithmetic number, because the mean of its divisors is an integer number (69828).

2²⁴⁴³⁹¹ is an apocalyptic number.

244391 is a deficient number, since it is larger than the sum of its proper divisors (34921).

244391 is an equidigital number, since it uses as much as digits as its factorization.

244391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34920.

The product of its digits is 864, while the sum is 23.

The square root of 244391 is about 494.3591811628. The cubic root of 244391 is about 62.5213580339.

The spelling of 244391 in words is "two hundred forty-four thousand, three hundred ninety-one".