1143986 has 8 divisors (see below), whose sum is σ = 1721244. Its totient is φ = 570240.

The previous prime is 1143977. The next prime is 1144001. The reversal of 1143986 is 6893411.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1142761 + 1225 = 1069^2 + 35^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 206 + ... + 1526.

2^1143986 is an apocalyptic number.

1143986 is a deficient number, since it is larger than the sum of its proper divisors (577258).

1143986 is a wasteful number, since it uses less digits than its factorization.

1143986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1756.

The product of its digits is 5184, while the sum is 32.

The square root of 1143986 is about 1069.5728119207. The cubic root of 1143986 is about 104.5860039988.

The spelling of 1143986 in words is "one million, one hundred forty-three thousand, nine hundred eighty-six".