3995540 has 12 divisors (see below), whose sum is σ = 8390676. Its totient is φ = 1598208.

The previous prime is 3995513. The next prime is 3995543. The reversal of 3995540 is 455993.

It can be written as a sum of positive squares in 2 ways, for example, as 2521744 + 1473796 = 1588^2 + 1214^2 .

It is a plaindrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 3995540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3995543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99869 + ... + 99908.

It is an arithmetic number, because the mean of its divisors is an integer number (699223).

Almost surely, 2^3995540 is an apocalyptic number.

It is an amenable number.

3995540 is an abundant number, since it is smaller than the sum of its proper divisors (4395136).

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

3995540 is a wasteful number, since it uses less digits than its factorization.

3995540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199786 (or 199784 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 35.

The square root of 3995540 is about 1998.8846890204. The cubic root of 3995540 is about 158.6810848497.

The spelling of 3995540 in words is "three million, nine hundred ninety-five thousand, five hundred forty".