4049903 has 16 divisors (see below), whose sum is σ = 4816896. Its totient is φ = 3356640.

The previous prime is 4049897. The next prime is 4049921. The reversal of 4049903 is 3099404.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 4049903 - 2⁴ = 4049887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4049923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18050 + ... + 18272.

It is an arithmetic number, because the mean of its divisors is an integer number (301056).

Almost surely, 2^4049903 is an apocalyptic number.

4049903 is a deficient number, since it is larger than the sum of its proper divisors (766993).

4049903 is a wasteful number, since it uses less digits than its factorization.

4049903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 4049903 is about 2012.4370797617. The cubic root of 4049903 is about 159.3975128008.

The spelling of 4049903 in words is "four million, forty-nine thousand, nine hundred three".