994489 has 2 divisors, whose sum is σ = 994490. Its totient is φ = 994488.

The previous prime is 994471. The next prime is 994501. The reversal of 994489 is 984499.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 883600 + 110889 = 940^2 + 333^2 .

It is a cyclic number.

It is not a de Polignac number, because 994489 - 2⁵ = 994457 is a prime.

It is a super-2 number, since 2×994489² = 1978016742242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (904489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 497244 + 497245.

It is an arithmetic number, because the mean of its divisors is an integer number (497245).

2⁹⁹⁴⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

994489 is a deficient number, since it is larger than the sum of its proper divisors (1).

994489 is an equidigital number, since it uses as much as digits as its factorization.

994489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 43.

The square root of 994489 is about 997.2406931128. The cubic root of 994489 is about 99.8159615061.

Adding to 994489 its product of digits (93312), we get a palindrome (1087801).

The spelling of 994489 in words is "nine hundred ninety-four thousand, four hundred eighty-nine".