905000905 has 16 divisors (see below), whose sum is σ = 1102924368. Its totient is φ = 712800000.

The previous prime is 905000897. The next prime is 905000911. The reversal of 905000905 is 509000509.

It can be written as a sum of positive squares in 8 ways, for example, as 27123264 + 877877641 = 5208^2 + 29629^2 .

It is not a de Polignac number, because 905000905 - 2³ = 905000897 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86455 + ... + 96355.

It is an arithmetic number, because the mean of its divisors is an integer number (68932773).

Almost surely, 2^905000905 is an apocalyptic number.

It is an amenable number.

905000905 is a deficient number, since it is larger than the sum of its proper divisors (197923463).

905000905 is a wasteful number, since it uses less digits than its factorization.

905000905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10188.

The product of its (nonzero) digits is 2025, while the sum is 28.

The square root of 905000905 is about 30083.2329545878. The cubic root of 905000905 is about 967.2743495104.

The spelling of 905000905 in words is "nine hundred five million, nine hundred five", and thus it is an aban number.