1279487 has 8 divisors (see below), whose sum is σ = 1430352. Its totient is φ = 1134400.

The previous prime is 1279483. The next prime is 1279493. The reversal of 1279487 is 7849721.

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 1279487 - 2² = 1279483 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1279487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1279483) 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, 968 + ... + 1869.

It is an arithmetic number, because the mean of its divisors is an integer number (178794).

2^1279487 is an apocalyptic number.

1279487 is a deficient number, since it is larger than the sum of its proper divisors (150865).

1279487 is a wasteful number, since it uses less digits than its factorization.

1279487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2889.

The product of its digits is 28224, while the sum is 38.

The square root of 1279487 is about 1131.1441110663. The cubic root of 1279487 is about 108.5621975564.

The spelling of 1279487 in words is "one million, two hundred seventy-nine thousand, four hundred eighty-seven".