4009838 has 16 divisors (see below), whose sum is σ = 7060704. Its totient is φ = 1671840.

The previous prime is 4009823. The next prime is 4009849. The reversal of 4009838 is 8389004.

It is a super-3 number, since 3×4009838³ (a number of 21 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3353 + ... + 4388.

It is an arithmetic number, because the mean of its divisors is an integer number (441294).

Almost surely, 2^4009838 is an apocalyptic number.

4009838 is a deficient number, since it is larger than the sum of its proper divisors (3050866).

4009838 is a wasteful number, since it uses less digits than its factorization.

4009838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7787.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 4009838 is about 2002.4579895718. The cubic root of 4009838 is about 158.8701390785.

The spelling of 4009838 in words is "four million, nine thousand, eight hundred thirty-eight".