999255135 has 16 divisors (see below), whose sum is σ = 1605856896. Its totient is φ = 530586528.

The previous prime is 999255119. The next prime is 999255137. The reversal of 999255135 is 531552999.

It is not a de Polignac number, because 999255135 - 2⁴ = 999255119 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999255137) 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, 143329 + ... + 150138.

It is an arithmetic number, because the mean of its divisors is an integer number (100366056).

Almost surely, 2^999255135 is an apocalyptic number.

999255135 is a deficient number, since it is larger than the sum of its proper divisors (606601761).

999255135 is a wasteful number, since it uses less digits than its factorization.

999255135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293702.

The product of its digits is 546750, while the sum is 48.

The square root of 999255135 is about 31610.9970579860. The cubic root of 999255135 is about 999.7516499940.

The spelling of 999255135 in words is "nine hundred ninety-nine million, two hundred fifty-five thousand, one hundred thirty-five".