1153999 has 12 divisors (see below), whose sum is σ = 1465128. Its totient is φ = 898800.

The previous prime is 1153973. The next prime is 1154017. The reversal of 1153999 is 9993511.

It is not a de Polignac number, because 1153999 - 2⁵ = 1153967 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1153099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 532 + ... + 1609.

It is an arithmetic number, because the mean of its divisors is an integer number (122094).

2^1153999 is an apocalyptic number.

1153999 is a deficient number, since it is larger than the sum of its proper divisors (311129).

1153999 is a wasteful number, since it uses less digits than its factorization.

1153999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2166 (or 2159 counting only the distinct ones).

The product of its digits is 10935, while the sum is 37.

The square root of 1153999 is about 1074.2434547159. The cubic root of 1153999 is about 104.8902557074.

It can be divided in two parts, 115 and 3999, that added together give a palindrome (4114).

The spelling of 1153999 in words is "one million, one hundred fifty-three thousand, nine hundred ninety-nine".