2985905 has 16 divisors (see below), whose sum is σ = 3919104. Its totient is φ = 2170560.

The previous prime is 2985901. The next prime is 2985943. The reversal of 2985905 is 5095892.

It is a happy number.

It is not a de Polignac number, because 2985905 - 2² = 2985901 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is a zygodrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (2985901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4292 + ... + 4938.

It is an arithmetic number, because the mean of its divisors is an integer number (244944).

2^2985905 is an apocalyptic number.

It is an amenable number.

2985905 is a deficient number, since it is larger than the sum of its proper divisors (933199).

2985905 is a wasteful number, since it uses less digits than its factorization.

2985905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736.

The product of its (nonzero) digits is 32400, while the sum is 38.

The square root of 2985905 is about 1727.9771410525. The cubic root of 2985905 is about 143.9987300557.

The spelling of 2985905 in words is "two million, nine hundred eighty-five thousand, nine hundred five".