3956965 has 16 divisors (see below), whose sum is σ = 4960368. Its totient is φ = 3027456.

The previous prime is 3956957. The next prime is 3956983. The reversal of 3956965 is 5696593.

It is a happy number.

3956965 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 799236 + 3157729 = 894^2 + 1777^2 .

It is not a de Polignac number, because 3956965 - 2³ = 3956957 is a prime.

It is a super-2 number, since 2×3956965² = 31315144022450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13359 + ... + 13651.

It is an arithmetic number, because the mean of its divisors is an integer number (310023).

Almost surely, 2^3956965 is an apocalyptic number.

It is an amenable number.

3956965 is a deficient number, since it is larger than the sum of its proper divisors (1003403).

3956965 is a wasteful number, since it uses less digits than its factorization.

3956965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408.

The product of its digits is 218700, while the sum is 43.

The square root of 3956965 is about 1989.2121556033. The cubic root of 3956965 is about 158.1687696171.

The spelling of 3956965 in words is "three million, nine hundred fifty-six thousand, nine hundred sixty-five".