999153 has 12 divisors (see below), whose sum is σ = 1519440. Its totient is φ = 630936.

The previous prime is 999149. The next prime is 999169. The reversal of 999153 is 351999.

It is not a de Polignac number, because 999153 - 2² = 999149 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (999133) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2751 + ... + 3092.

It is an arithmetic number, because the mean of its divisors is an integer number (126620).

2⁹⁹⁹¹⁵³ is an apocalyptic number.

It is an amenable number.

999153 is a deficient number, since it is larger than the sum of its proper divisors (520287).

999153 is a wasteful number, since it uses less digits than its factorization.

999153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5868 (or 5865 counting only the distinct ones).

The product of its digits is 10935, while the sum is 36.

The square root of 999153 is about 999.5764102859. The cubic root of 999153 is about 99.9717586917.

The spelling of 999153 in words is "nine hundred ninety-nine thousand, one hundred fifty-three".