1229489 has 2 divisors, whose sum is σ = 1229490. Its totient is φ = 1229488.

The previous prime is 1229483. The next prime is 1229519. The reversal of 1229489 is 9849221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1221025 + 8464 = 1105^2 + 92^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1229489 is a prime.

It is a super-2 number, since 2×1229489² = 3023286402242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1229483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 614744 + 614745.

It is an arithmetic number, because the mean of its divisors is an integer number (614745).

2^1229489 is an apocalyptic number.

It is an amenable number.

1229489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1229489 is an equidigital number, since it uses as much as digits as its factorization.

1229489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 35.

The square root of 1229489 is about 1108.8232501170. The cubic root of 1229489 is about 107.1292873396.

Subtracting from 1229489 its product of digits (10368), we obtain a palindrome (1219121).

The spelling of 1229489 in words is "one million, two hundred twenty-nine thousand, four hundred eighty-nine".