1143998 has 8 divisors (see below), whose sum is σ = 1816992. Its totient is φ = 538336.

The previous prime is 1143977. The next prime is 1144001. The reversal of 1143998 is 8993411.

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

It is a congruent 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, 16790 + ... + 16857.

It is an arithmetic number, because the mean of its divisors is an integer number (227124).

2^1143998 is an apocalyptic number.

1143998 is a deficient number, since it is larger than the sum of its proper divisors (672994).

1143998 is a wasteful number, since it uses less digits than its factorization.

1143998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33666.

The product of its digits is 7776, while the sum is 35.

The square root of 1143998 is about 1069.5784216223. The cubic root of 1143998 is about 104.5863696873.

The spelling of 1143998 in words is "one million, one hundred forty-three thousand, nine hundred ninety-eight".