244140689 has 32 divisors (see below), whose sum is σ = 290535840. Its totient is φ = 203046912.

The previous prime is 244140683. The next prime is 244140739. The reversal of 244140689 is 986041442.

It can be written as a sum of positive squares in 16 ways, for example, as 1030225 + 243110464 = 1015^2 + 15592^2 .

It is a de Polignac number, because none of the positive numbers 2^k-244140689 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (244140683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 596717 + ... + 597125.

It is an arithmetic number, because the mean of its divisors is an integer number (9079245).

Almost surely, 2^244140689 is an apocalyptic number.

It is an amenable number.

244140689 is a deficient number, since it is larger than the sum of its proper divisors (46395151).

244140689 is a wasteful number, since it uses less digits than its factorization.

244140689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549.

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 244140689 is about 15625.0020479999. The cubic root of 244140689 is about 625.0000546133. Note that the first 4 decimals are identical.

The spelling of 244140689 in words is "two hundred forty-four million, one hundred forty thousand, six hundred eighty-nine".