4049685 has 24 divisors (see below), whose sum is σ = 7248384. Its totient is φ = 2089440.

The previous prime is 4049609. The next prime is 4049707. The reversal of 4049685 is 5869404.

It is not a de Polignac number, because 4049685 - 2⁸ = 4049429 is a prime.

It is a nialpdrome in base 9.

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 23 ways as a sum of consecutive naturals, for example, 57 + ... + 2846.

It is an arithmetic number, because the mean of its divisors is an integer number (302016).

Almost surely, 2^4049685 is an apocalyptic number.

4049685 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4049685 is a deficient number, since it is larger than the sum of its proper divisors (3198699).

4049685 is a wasteful number, since it uses less digits than its factorization.

4049685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2945 (or 2942 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 4049685 is about 2012.3829158488. The cubic root of 4049685 is about 159.3946527091.

The spelling of 4049685 in words is "four million, forty-nine thousand, six hundred eighty-five".