3965540 has 12 divisors (see below), whose sum is σ = 8327676. Its totient is φ = 1586208.

The previous prime is 3965537. The next prime is 3965569. The reversal of 3965540 is 455693.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 732736 + 3232804 = 856^2 + 1798^2 .

It is a d-powerful number, because it can be written as 3¹⁰ + 9 + 6³ + 5⁹ + 5⁹ + 4² + 0 .

It is a junction number, because it is equal to n+sod(n) for n = 3965497 and 3965506.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99119 + ... + 99158.

It is an arithmetic number, because the mean of its divisors is an integer number (693973).

Almost surely, 2^3965540 is an apocalyptic number.

It is an amenable number.

3965540 is an abundant number, since it is smaller than the sum of its proper divisors (4362136).

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

3965540 is a wasteful number, since it uses less digits than its factorization.

3965540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198286 (or 198284 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 3965540 is about 1991.3663650870. The cubic root of 3965540 is about 158.2829411812.

The spelling of 3965540 in words is "three million, nine hundred sixty-five thousand, five hundred forty".