441249989 has 2 divisors, whose sum is σ = 441249990. Its totient is φ = 441249988.

The previous prime is 441249983. The next prime is 441250003. The reversal of 441249989 is 989942144.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 434013889 + 7236100 = 20833^2 + 2690^2 .

It is a cyclic number.

It is not a de Polignac number, because 441249989 - 2⁴ = 441249973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (441249983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220624994 + 220624995.

It is an arithmetic number, because the mean of its divisors is an integer number (220624995).

Almost surely, 2^441249989 is an apocalyptic number.

It is an amenable number.

441249989 is a deficient number, since it is larger than the sum of its proper divisors (1).

441249989 is an equidigital number, since it uses as much as digits as its factorization.

441249989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 746496, while the sum is 50.

The square root of 441249989 is about 21005.9512757694. The cubic root of 441249989 is about 761.3100609876.

The spelling of 441249989 in words is "four hundred forty-one million, two hundred forty-nine thousand, nine hundred eighty-nine".