1143969 has 4 divisors (see below), whose sum is σ = 1525296. Its totient is φ = 762644.

The previous prime is 1143959. The next prime is 1143977. The reversal of 1143969 is 9693411.

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.

It is a cyclic number.

It is not a de Polignac number, because 1143969 - 2⁴ = 1143953 is a prime.

It is a super-2 number, since 2×1143969² = 2617330145922, which contains 22 as substring.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (1143949) 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, 190659 + ... + 190664.

It is an arithmetic number, because the mean of its divisors is an integer number (381324).

2^1143969 is an apocalyptic number.

It is an amenable number.

1143969 is a deficient number, since it is larger than the sum of its proper divisors (381327).

1143969 is an equidigital number, since it uses as much as digits as its factorization.

1143969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381326.

The product of its digits is 5832, while the sum is 33.

The square root of 1143969 is about 1069.5648647932. The cubic root of 1143969 is about 104.5854859356.

It can be divided in two parts, 1143 and 969, that added together give a palindrome (2112).

The spelling of 1143969 in words is "one million, one hundred forty-three thousand, nine hundred sixty-nine".