905040505 has 8 divisors (see below), whose sum is σ = 1121082624. Its totient is φ = 700676400.

The previous prime is 905040467. The next prime is 905040527. The reversal of 905040505 is 505040509.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 905040505 - 2¹⁷ = 904909433 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2919331 + ... + 2919640.

It is an arithmetic number, because the mean of its divisors is an integer number (140135328).

Almost surely, 2^905040505 is an apocalyptic number.

It is an amenable number.

905040505 is a deficient number, since it is larger than the sum of its proper divisors (216042119).

905040505 is a wasteful number, since it uses less digits than its factorization.

905040505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5839007.

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 905040505 is about 30083.8911213294. The cubic root of 905040505 is about 967.2884576014.

The spelling of 905040505 in words is "nine hundred five million, forty thousand, five hundred five".