1197791 has 8 divisors (see below), whose sum is σ = 1380000. Its totient is φ = 1018368.

The previous prime is 1197767. The next prime is 1197799. The reversal of 1197791 is 1977911.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1197791 - 2¹⁴ = 1181407 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1197799) 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, 335 + ... + 1583.

It is an arithmetic number, because the mean of its divisors is an integer number (172500).

2^1197791 is an apocalyptic number.

1197791 is a deficient number, since it is larger than the sum of its proper divisors (182209).

1197791 is a wasteful number, since it uses less digits than its factorization.

1197791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1393.

The product of its digits is 3969, while the sum is 35.

The square root of 1197791 is about 1094.4363846291. The cubic root of 1197791 is about 106.2006109557.

It can be divided in two parts, 11 and 97791, that multiplied together give a palindrome (1075701).

The spelling of 1197791 in words is "one million, one hundred ninety-seven thousand, seven hundred ninety-one".