244300021 has 4 divisors (see below), whose sum is σ = 279200032. Its totient is φ = 209400012.

The previous prime is 244300019. The next prime is 244300051. The reversal of 244300021 is 120003442.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 244300021 - 2¹ = 244300019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 244299968 and 244300004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (244300051) 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, 17449995 + ... + 17450008.

It is an arithmetic number, because the mean of its divisors is an integer number (69800008).

Almost surely, 2^244300021 is an apocalyptic number.

It is an amenable number.

244300021 is a deficient number, since it is larger than the sum of its proper divisors (34900011).

244300021 is an equidigital number, since it uses as much as digits as its factorization.

244300021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34900010.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 244300021 is about 15630.0998397323. The cubic root of 244300021 is about 625.1359883293.

Adding to 244300021 its reverse (120003442), we get a palindrome (364303463).

The spelling of 244300021 in words is "two hundred forty-four million, three hundred thousand, twenty-one".