3995420 has 72 divisors (see below), whose sum is σ = 10010112. Its totient is φ = 1330560.

The previous prime is 3995413. The next prime is 3995429. The reversal of 3995420 is 245993.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3995429) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31397 + ... + 31523.

Almost surely, 2^3995420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3995420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5005056).

3995420 is an abundant number, since it is smaller than the sum of its proper divisors (6014692).

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

3995420 is a wasteful number, since it uses less digits than its factorization.

3995420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171 (or 158 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 3995420 is about 1998.8546720560. The cubic root of 3995420 is about 158.6794962517.

It can be divided in two parts, 39 and 95420, that added together give a palindrome (95459).

The spelling of 3995420 in words is "three million, nine hundred ninety-five thousand, four hundred twenty".