1291093 has 4 divisors (see below), whose sum is σ = 1294848. Its totient is φ = 1287340.

The previous prime is 1291079. The next prime is 1291111. The reversal of 1291093 is 3901921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1291093 - 2⁹ = 1290581 is a prime.

It is a super-2 number, since 2×1291093² = 3333842269298, which contains 22 as substring.

It is a Duffinian number.

1291093 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1291063) 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, 1303 + ... + 2068.

It is an arithmetic number, because the mean of its divisors is an integer number (323712).

2^1291093 is an apocalyptic number.

It is an amenable number.

1291093 is a deficient number, since it is larger than the sum of its proper divisors (3755).

1291093 is an equidigital number, since it uses as much as digits as its factorization.

1291093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3754.

The product of its (nonzero) digits is 486, while the sum is 25.

The square root of 1291093 is about 1136.2627337020. The cubic root of 1291093 is about 108.8894595200.

The spelling of 1291093 in words is "one million, two hundred ninety-one thousand, ninety-three".