1159998 has 32 divisors (see below), whose sum is σ = 2695680. Its totient is φ = 325920.

The previous prime is 1159997. The next prime is 1160009. The reversal of 1159998 is 8999511.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1159993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2788 + ... + 3176.

It is an arithmetic number, because the mean of its divisors is an integer number (84240).

2^1159998 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1159998, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1347840).

1159998 is an abundant number, since it is smaller than the sum of its proper divisors (1535682).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1159998 is a wasteful number, since it uses less digits than its factorization.

1159998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472.

The product of its digits is 29160, while the sum is 42.

The square root of 1159998 is about 1077.0320329498. The cubic root of 1159998 is about 105.0716970638.

The spelling of 1159998 in words is "one million, one hundred fifty-nine thousand, nine hundred ninety-eight".