1249489 has 2 divisors, whose sum is σ = 1249490. Its totient is φ = 1249488.

The previous prime is 1249487. The next prime is 1249499. The reversal of 1249489 is 9849421.

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., 748225 + 501264 = 865^2 + 708^2 .

It is an emirp because it is prime and its reverse (9849421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1249489 - 2¹ = 1249487 is a prime.

It is a super-2 number, since 2×1249489² = 3122445522242, which contains 22 as substring.

Together with 1249487, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1249481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 624744 + 624745.

It is an arithmetic number, because the mean of its divisors is an integer number (624745).

2^1249489 is an apocalyptic number.

It is an amenable number.

1249489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1249489 is an equidigital number, since it uses as much as digits as its factorization.

1249489 is an evil number, because the sum of its binary digits is even.

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

The square root of 1249489 is about 1117.8054392424. The cubic root of 1249489 is about 107.7070536192.

The spelling of 1249489 in words is "one million, two hundred forty-nine thousand, four hundred eighty-nine".