1249969 has 4 divisors (see below), whose sum is σ = 1428544. Its totient is φ = 1071396.

The previous prime is 1249943. The next prime is 1249999. The reversal of 1249969 is 9699421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9699421 = 2417 ⋅4013.

It is a cyclic number.

It is not a de Polignac number, because 1249969 - 2⁷ = 1249841 is a prime.

It is a super-2 number, since 2×1249969² = 3124845001922, which contains 22 as substring.

It is a Duffinian number.

1249969 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1249939) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89277 + ... + 89290.

It is an arithmetic number, because the mean of its divisors is an integer number (357136).

2^1249969 is an apocalyptic number.

It is an amenable number.

1249969 is a deficient number, since it is larger than the sum of its proper divisors (178575).

1249969 is an equidigital number, since it uses as much as digits as its factorization.

1249969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178574.

The product of its digits is 34992, while the sum is 40.

The square root of 1249969 is about 1118.0201250425. The cubic root of 1249969 is about 107.7208439946.

The spelling of 1249969 in words is "one million, two hundred forty-nine thousand, nine hundred sixty-nine".