244028821 has 2 divisors, whose sum is σ = 244028822. Its totient is φ = 244028820.

The previous prime is 244028809. The next prime is 244028831. The reversal of 244028821 is 128820442.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 198951025 + 45077796 = 14105^2 + 6714^2 .

It is a cyclic number.

It is not a de Polignac number, because 244028821 - 2¹⁷ = 243897749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (244028831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122014410 + 122014411.

It is an arithmetic number, because the mean of its divisors is an integer number (122014411).

Almost surely, 2^244028821 is an apocalyptic number.

It is an amenable number.

244028821 is a deficient number, since it is larger than the sum of its proper divisors (1).

244028821 is an equidigital number, since it uses as much as digits as its factorization.

244028821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8192, while the sum is 31.

The square root of 244028821 is about 15621.4218623018. The cubic root of 244028821 is about 624.9045793526.

The spelling of 244028821 in words is "two hundred forty-four million, twenty-eight thousand, eight hundred twenty-one".