4000038 has 16 divisors (see below), whose sum is σ = 9143040. Its totient is φ = 1142856.

The previous prime is 4000037. The next prime is 4000039. The reversal of 4000038 is 8300004.

It is an interprime number because it is at equal distance from previous prime (4000037) and next prime (4000039).

It is a junction number, because it is equal to n+sod(n) for n = 3999990 and 4000026.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4000037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47578 + ... + 47661.

It is an arithmetic number, because the mean of its divisors is an integer number (571440).

Almost surely, 2^4000038 is an apocalyptic number.

4000038 is an abundant number, since it is smaller than the sum of its proper divisors (5143002).

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

4000038 is a wasteful number, since it uses less digits than its factorization.

4000038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95251.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 4000038 is about 2000.0094999774. The cubic root of 4000038 is about 158.7406078722.

The spelling of 4000038 in words is "four million, thirty-eight", and thus it is an aban number.