1153859 has 4 divisors (see below), whose sum is σ = 1318704. Its totient is φ = 989016.

The previous prime is 1153853. The next prime is 1153871. The reversal of 1153859 is 9583511.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-1153859 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (1153853) 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, 82412 + ... + 82425.

It is an arithmetic number, because the mean of its divisors is an integer number (329676).

2^1153859 is an apocalyptic number.

1153859 is a deficient number, since it is larger than the sum of its proper divisors (164845).

1153859 is an equidigital number, since it uses as much as digits as its factorization.

1153859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164844.

The product of its digits is 5400, while the sum is 32.

The square root of 1153859 is about 1074.1782906017. The cubic root of 1153859 is about 104.8860138696.

The spelling of 1153859 in words is "one million, one hundred fifty-three thousand, eight hundred fifty-nine".