244913 has 4 divisors (see below), whose sum is σ = 249588. Its totient is φ = 240240.

The previous prime is 244901. The next prime is 244939. The reversal of 244913 is 319442.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 319442 = 2 ⋅159721.

It can be written as a sum of positive squares in 2 ways, for example, as 134689 + 110224 = 367^2 + 332^2 .

It is a cyclic number.

It is not a de Polignac number, because 244913 - 2⁴ = 244897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (244943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2258 + ... + 2363.

It is an arithmetic number, because the mean of its divisors is an integer number (62397).

2²⁴⁴⁹¹³ is an apocalyptic number.

It is an amenable number.

244913 is a deficient number, since it is larger than the sum of its proper divisors (4675).

244913 is an equidigital number, since it uses as much as digits as its factorization.

244913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4674.

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

The square root of 244913 is about 494.8868557559. The cubic root of 244913 is about 62.5658399506.

Subtracting 244913 from its reverse (319442), we obtain a square (74529 = 273²).

The spelling of 244913 in words is "two hundred forty-four thousand, nine hundred thirteen".