4013838 has 12 divisors (see below), whose sum is σ = 8696688. Its totient is φ = 1337940.

The previous prime is 4013837. The next prime is 4013851. The reversal of 4013838 is 8383104.

It is a super-2 number, since 2×4013838² = 32221790980488, which contains 22 as substring.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4013837) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 111478 + ... + 111513.

It is an arithmetic number, because the mean of its divisors is an integer number (724724).

Almost surely, 2^4013838 is an apocalyptic number.

4013838 is an abundant number, since it is smaller than the sum of its proper divisors (4682850).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4013838 is a wasteful number, since it uses less digits than its factorization.

4013838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222999 (or 222996 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 4013838 is about 2003.4565131292. The cubic root of 4013838 is about 158.9229483080.

It can be divided in two parts, 4013 and 838, that added together give a triangular number (4851 = T₉₈).

The spelling of 4013838 in words is "four million, thirteen thousand, eight hundred thirty-eight".