905135999 has 4 divisors (see below), whose sum is σ = 916041336. Its totient is φ = 894230664.

The previous prime is 905135993. The next prime is 905136017. The reversal of 905135999 is 999531509.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 999531509 = 277 ⋅3608417.

It is a cyclic number.

It is not a de Polignac number, because 905135999 - 2⁴ = 905135983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (905135993) 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, 5452544 + ... + 5452709.

It is an arithmetic number, because the mean of its divisors is an integer number (229010334).

Almost surely, 2^905135999 is an apocalyptic number.

905135999 is a deficient number, since it is larger than the sum of its proper divisors (10905337).

905135999 is a wasteful number, since it uses less digits than its factorization.

905135999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10905336.

The product of its (nonzero) digits is 492075, while the sum is 50.

The square root of 905135999 is about 30085.4782079328. The cubic root of 905135999 is about 967.3224770716.

The spelling of 905135999 in words is "nine hundred five million, one hundred thirty-five thousand, nine hundred ninety-nine".