1197291 has 4 divisors (see below), whose sum is σ = 1596392. Its totient is φ = 798192.

The previous prime is 1197289. The next prime is 1197307. The reversal of 1197291 is 1927911.

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

It is not a de Polignac number, because 1197291 - 2¹ = 1197289 is a prime.

It is a super-3 number, since 3×1197291³ = 5148970558113339513, which contains 333 as substring.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1197211) 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, 199546 + ... + 199551.

It is an arithmetic number, because the mean of its divisors is an integer number (399098).

2^1197291 is an apocalyptic number.

1197291 is a deficient number, since it is larger than the sum of its proper divisors (399101).

1197291 is an equidigital number, since it uses as much as digits as its factorization.

1197291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399100.

The product of its digits is 1134, while the sum is 30.

The square root of 1197291 is about 1094.2079327075. The cubic root of 1197291 is about 106.1858316116.

The spelling of 1197291 in words is "one million, one hundred ninety-seven thousand, two hundred ninety-one".