1219489 has 2 divisors, whose sum is σ = 1219490. Its totient is φ = 1219488.

The previous prime is 1219487. The next prime is 1219501. The reversal of 1219489 is 9849121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1134225 + 85264 = 1065^2 + 292^2 .

It is a cyclic number.

It is not a de Polignac number, because 1219489 - 2¹ = 1219487 is a prime.

It is a super-2 number, since 2×1219489² = 2974306842242, which contains 22 as substring.

Together with 1219487, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1219481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 609744 + 609745.

It is an arithmetic number, because the mean of its divisors is an integer number (609745).

2^1219489 is an apocalyptic number.

It is an amenable number.

1219489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1219489 is an equidigital number, since it uses as much as digits as its factorization.

1219489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 34.

The square root of 1219489 is about 1104.3047586604. The cubic root of 1219489 is about 106.8380523880.

The spelling of 1219489 in words is "one million, two hundred nineteen thousand, four hundred eighty-nine".