2017040905 has 32 divisors (see below), whose sum is σ = 2799733248. Its totient is φ = 1378713600.

The previous prime is 2017040873. The next prime is 2017040911. The reversal of 2017040905 is 5090407102.

It is a happy number.

It is not a de Polignac number, because 2017040905 - 2⁵ = 2017040873 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1077120 + ... + 1078990.

It is an arithmetic number, because the mean of its divisors is an integer number (87491664).

Almost surely, 2^2017040905 is an apocalyptic number.

It is an amenable number.

2017040905 is a deficient number, since it is larger than the sum of its proper divisors (782692343).

2017040905 is a wasteful number, since it uses less digits than its factorization.

2017040905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3057.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 2017040905 is about 44911.4785439090. The cubic root of 2017040905 is about 1263.4893004523.

It can be divided in two parts, 20170 and 40905, that added together give a triangular number (61075 = T₃₄₉).

The spelling of 2017040905 in words is "two billion, seventeen million, forty thousand, nine hundred five".