1283091 has 8 divisors (see below), whose sum is σ = 1719744. Its totient is φ = 850920.

The previous prime is 1283083. The next prime is 1283099. The reversal of 1283091 is 1903821.

It is an interprime number because it is at equal distance from previous prime (1283083) and next prime (1283099).

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

It is not a de Polignac number, because 1283091 - 2³ = 1283083 is a prime.

1283091 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1283099) 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, 381 + ... + 1646.

It is an arithmetic number, because the mean of its divisors is an integer number (214968).

2^1283091 is an apocalyptic number.

1283091 is a deficient number, since it is larger than the sum of its proper divisors (436653).

1283091 is a wasteful number, since it uses less digits than its factorization.

1283091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2241.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 1283091 is about 1132.7360681112. The cubic root of 1283091 is about 108.6640329989.

It can be divided in two parts, 12830 and 91, that added together give a palindrome (12921).

The spelling of 1283091 in words is "one million, two hundred eighty-three thousand, ninety-one".