4905689 has 4 divisors (see below), whose sum is σ = 4919424. Its totient is φ = 4891956.

The previous prime is 4905661. The next prime is 4905701. The reversal of 4905689 is 9865094.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4905689 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4905619) 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 3 ways as a sum of consecutive naturals, for example, 6317 + ... + 7050.

It is an arithmetic number, because the mean of its divisors is an integer number (1229856).

Almost surely, 2^4905689 is an apocalyptic number.

It is an amenable number.

4905689 is a deficient number, since it is larger than the sum of its proper divisors (13735).

4905689 is a wasteful number, since it uses less digits than its factorization.

4905689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13734.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 4905689 is about 2214.8790034672. The cubic root of 4905689 is about 169.9156328779.

The spelling of 4905689 in words is "four million, nine hundred five thousand, six hundred eighty-nine".