244438393 has 4 divisors (see below), whose sum is σ = 258817140. Its totient is φ = 230059648.

The previous prime is 244438349. The next prime is 244438409. The reversal of 244438393 is 393834442.

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

It can be written as a sum of positive squares in 2 ways, for example, as 137170944 + 107267449 = 11712^2 + 10357^2 .

It is a cyclic number.

It is not a de Polignac number, because 244438393 - 2¹⁷ = 244307321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (244438343) 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, 7189348 + ... + 7189381.

It is an arithmetic number, because the mean of its divisors is an integer number (64704285).

Almost surely, 2^244438393 is an apocalyptic number.

It is an amenable number.

244438393 is a deficient number, since it is larger than the sum of its proper divisors (14378747).

244438393 is a wasteful number, since it uses less digits than its factorization.

244438393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14378746.

The product of its digits is 248832, while the sum is 40.

The square root of 244438393 is about 15634.5256723701. The cubic root of 244438393 is about 625.2539921268.

The spelling of 244438393 in words is "two hundred forty-four million, four hundred thirty-eight thousand, three hundred ninety-three".