3965140 has 12 divisors (see below), whose sum is σ = 8326836. Its totient is φ = 1586048.

The previous prime is 3965123. The next prime is 3965147. The reversal of 3965140 is 415693.

It can be written as a sum of positive squares in 2 ways, for example, as 1648656 + 2316484 = 1284^2 + 1522^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3965099 and 3965108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3965147) 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, 99109 + ... + 99148.

It is an arithmetic number, because the mean of its divisors is an integer number (693903).

Almost surely, 2^3965140 is an apocalyptic number.

It is an amenable number.

3965140 is an abundant number, since it is smaller than the sum of its proper divisors (4361696).

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

3965140 is a wasteful number, since it uses less digits than its factorization.

3965140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198266 (or 198264 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 3965140 is about 1991.2659290009. The cubic root of 3965140 is about 158.2776190556.

The spelling of 3965140 in words is "three million, nine hundred sixty-five thousand, one hundred forty".