1141997 has 4 divisors (see below), whose sum is σ = 1155840. Its totient is φ = 1128156.

The previous prime is 1141969. The next prime is 1141999. The reversal of 1141997 is 7991411.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 7991411 = 17 ⋅470083.

It is a cyclic number.

It is not a de Polignac number, because 1141997 - 2¹⁰ = 1140973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1141999) 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, 6797 + ... + 6962.

It is an arithmetic number, because the mean of its divisors is an integer number (288960).

2^1141997 is an apocalyptic number.

It is an amenable number.

1141997 is a deficient number, since it is larger than the sum of its proper divisors (13843).

1141997 is an equidigital number, since it uses as much as digits as its factorization.

1141997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13842.

The product of its digits is 2268, while the sum is 32.

The square root of 1141997 is about 1068.6425969425. The cubic root of 1141997 is about 104.5253557513.

The spelling of 1141997 in words is "one million, one hundred forty-one thousand, nine hundred ninety-seven".