244392989 has 2 divisors, whose sum is σ = 244392990. Its totient is φ = 244392988.

The previous prime is 244392979. The next prime is 244393027. The reversal of 244392989 is 989293442.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 241553764 + 2839225 = 15542^2 + 1685^2 .

It is a cyclic number.

It is not a de Polignac number, because 244392989 - 2¹⁶ = 244327453 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (244392979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122196494 + 122196495.

It is an arithmetic number, because the mean of its divisors is an integer number (122196495).

Almost surely, 2^244392989 is an apocalyptic number.

It is an amenable number.

244392989 is a deficient number, since it is larger than the sum of its proper divisors (1).

244392989 is an equidigital number, since it uses as much as digits as its factorization.

244392989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1119744, while the sum is 50.

The square root of 244392989 is about 15633.0735621630. The cubic root of 244392989 is about 625.2152764545.

The spelling of 244392989 in words is "two hundred forty-four million, three hundred ninety-two thousand, nine hundred eighty-nine".