1279091 has 12 divisors (see below), whose sum is σ = 1453752. Its totient is φ = 1125300.

The previous prime is 1279087. The next prime is 1279093. The reversal of 1279091 is 1909721.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is not a de Polignac number, because 1279091 - 2² = 1279087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1279093) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41246 + ... + 41276.

It is an arithmetic number, because the mean of its divisors is an integer number (121146).

2^1279091 is an apocalyptic number.

1279091 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1279091 is a deficient number, since it is larger than the sum of its proper divisors (174661).

1279091 is an frugal number, since it uses more digits than its factorization.

1279091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95 (or 42 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 29.

The square root of 1279091 is about 1130.9690535112. The cubic root of 1279091 is about 108.5509964354.

The spelling of 1279091 in words is "one million, two hundred seventy-nine thousand, ninety-one".