1442989 has 2 divisors, whose sum is σ = 1442990. Its totient is φ = 1442988.

The previous prime is 1442983. The next prime is 1443007. The reversal of 1442989 is 9892441.

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., 1010025 + 432964 = 1005^2 + 658^2 .

It is a cyclic number.

It is not a de Polignac number, because 1442989 - 2¹⁷ = 1311917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1442983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 721494 + 721495.

It is an arithmetic number, because the mean of its divisors is an integer number (721495).

2^1442989 is an apocalyptic number.

It is an amenable number.

1442989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1442989 is an equidigital number, since it uses as much as digits as its factorization.

1442989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 37.

The square root of 1442989 is about 1201.2447710604. The cubic root of 1442989 is about 113.0024015988.

The spelling of 1442989 in words is "one million, four hundred forty-two thousand, nine hundred eighty-nine".