3965340 has 24 divisors (see below), whose sum is σ = 11103120. Its totient is φ = 1057408.

The previous prime is 3965317. The next prime is 3965341. The reversal of 3965340 is 435693.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 3965298 and 3965307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3965341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32985 + ... + 33104.

It is an arithmetic number, because the mean of its divisors is an integer number (462630).

Almost surely, 2^3965340 is an apocalyptic number.

3965340 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3965340 is an abundant number, since it is smaller than the sum of its proper divisors (7137780).

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

3965340 is a wasteful number, since it uses less digits than its factorization.

3965340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66101 (or 66099 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 30.

The square root of 3965340 is about 1991.3161476772. The cubic root of 3965340 is about 158.2802801631.

It can be divided in two parts, 39653 and 40, that added together give a palindrome (39693).

The spelling of 3965340 in words is "three million, nine hundred sixty-five thousand, three hundred forty".