1279088887 has 4 divisors (see below), whose sum is σ = 1279367280. Its totient is φ = 1278810496.

The previous prime is 1279088843. The next prime is 1279088929. The reversal of 1279088887 is 7888809721.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1279088887 - 2²⁷ = 1144871159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1279088827) 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, 132187 + ... + 141532.

It is an arithmetic number, because the mean of its divisors is an integer number (319841820).

Almost surely, 2^1279088887 is an apocalyptic number.

1279088887 is a deficient number, since it is larger than the sum of its proper divisors (278393).

1279088887 is an equidigital number, since it uses as much as digits as its factorization.

1279088887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278392.

The product of its (nonzero) digits is 3612672, while the sum is 58.

The square root of 1279088887 is about 35764.3521820262. The cubic root of 1279088887 is about 1085.5093666161.

The spelling of 1279088887 in words is "one billion, two hundred seventy-nine million, eighty-eight thousand, eight hundred eighty-seven".