3995838 has 96 divisors (see below), whose sum is σ = 11439360. Its totient is φ = 1004400.

The previous prime is 3995837. The next prime is 3995843. The reversal of 3995838 is 8385993.

Its product of digits (233280) is a multiple of the sum of its prime divisors (54).

It is a junction number, because it is equal to n+sod(n) for n = 3995793 and 3995802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3995837) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 128883 + ... + 128913.

It is an arithmetic number, because the mean of its divisors is an integer number (119160).

Almost surely, 2^3995838 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3995838, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5719680).

3995838 is an abundant number, since it is smaller than the sum of its proper divisors (7443522).

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

3995838 is a wasteful number, since it uses less digits than its factorization.

3995838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91 (or 54 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 3995838 is about 1998.9592291990. The cubic root of 3995838 is about 158.6850297306.

The spelling of 3995838 in words is "three million, nine hundred ninety-five thousand, eight hundred thirty-eight".