1171947 has 8 divisors (see below), whose sum is σ = 1785856. Its totient is φ = 669672.

The previous prime is 1171931. The next prime is 1171957. The reversal of 1171947 is 7491711.

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

It is not a de Polignac number, because 1171947 - 2⁴ = 1171931 is a prime.

It is a Duffinian number.

1171947 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1171927) 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, 27883 + ... + 27924.

It is an arithmetic number, because the mean of its divisors is an integer number (223232).

2^1171947 is an apocalyptic number.

1171947 is a deficient number, since it is larger than the sum of its proper divisors (613909).

1171947 is an equidigital number, since it uses as much as digits as its factorization.

1171947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55817.

The product of its digits is 1764, while the sum is 30.

The square root of 1171947 is about 1082.5650095953. The cubic root of 1171947 is about 105.4312423061.

Adding to 1171947 its product of digits (1764), we get a palindrome (1173711).

The spelling of 1171947 in words is "one million, one hundred seventy-one thousand, nine hundred forty-seven".