1249279 has 8 divisors (see below), whose sum is σ = 1354320. Its totient is φ = 1147776.

The previous prime is 1249273. The next prime is 1249301. The reversal of 1249279 is 9729421.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1249279 - 2⁵ = 1249247 is a prime.

It is a Duffinian number.

1249279 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1249273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124 + ... + 1585.

It is an arithmetic number, because the mean of its divisors is an integer number (169290).

2^1249279 is an apocalyptic number.

1249279 is a deficient number, since it is larger than the sum of its proper divisors (105041).

1249279 is a wasteful number, since it uses less digits than its factorization.

1249279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1769.

The product of its digits is 9072, while the sum is 34.

The square root of 1249279 is about 1117.7115012381. The cubic root of 1249279 is about 107.7010192194.

The spelling of 1249279 in words is "one million, two hundred forty-nine thousand, two hundred seventy-nine".