1279287 has 8 divisors (see below), whose sum is σ = 1895280. Its totient is φ = 852840.

The previous prime is 1279253. The next prime is 1279303. The reversal of 1279287 is 7829721.

It is not a de Polignac number, because 1279287 - 2¹⁴ = 1262903 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1279087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23664 + ... + 23717.

It is an arithmetic number, because the mean of its divisors is an integer number (236910).

2^1279287 is an apocalyptic number.

1279287 is a deficient number, since it is larger than the sum of its proper divisors (615993).

1279287 is an equidigital number, since it uses as much as digits as its factorization.

1279287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47390 (or 47384 counting only the distinct ones).

The product of its digits is 14112, while the sum is 36.

The square root of 1279287 is about 1131.0557015461. The cubic root of 1279287 is about 108.5565407135.

The spelling of 1279287 in words is "one million, two hundred seventy-nine thousand, two hundred eighty-seven".