1140897 has 4 divisors (see below), whose sum is σ = 1521200. Its totient is φ = 760596.

The previous prime is 1140871. The next prime is 1140901. The reversal of 1140897 is 7980411.

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: 7980411 = 3 ⋅2660137.

It is not a de Polignac number, because 1140897 - 2¹¹ = 1138849 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1140847) 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, 190147 + ... + 190152.

It is an arithmetic number, because the mean of its divisors is an integer number (380300).

2^1140897 is an apocalyptic number.

It is an amenable number.

1140897 is a deficient number, since it is larger than the sum of its proper divisors (380303).

1140897 is an equidigital number, since it uses as much as digits as its factorization.

1140897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380302.

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 1140897 is about 1068.1278013421. The cubic root of 1140897 is about 104.4917844934.

The spelling of 1140897 in words is "one million, one hundred forty thousand, eight hundred ninety-seven".