4905905 has 12 divisors (see below), whose sum is σ = 6089076. Its totient is φ = 3794400.

The previous prime is 4905899. The next prime is 4905917. The reversal of 4905905 is 5095094.

It can be written as a sum of positive squares in 2 ways, for example, as 2307361 + 2598544 = 1519^2 + 1612^2 .

It is not a de Polignac number, because 4905905 - 2¹⁸ = 4643761 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 4295 + ... + 5315.

It is an arithmetic number, because the mean of its divisors is an integer number (507423).

Almost surely, 2^4905905 is an apocalyptic number.

It is an amenable number.

4905905 is a deficient number, since it is larger than the sum of its proper divisors (1183171).

4905905 is a wasteful number, since it uses less digits than its factorization.

4905905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1088 (or 1057 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 32.

The square root of 4905905 is about 2214.9277640591. The cubic root of 4905905 is about 169.9181266655.

The spelling of 4905905 in words is "four million, nine hundred five thousand, nine hundred five".