3955965 has 16 divisors (see below), whose sum is σ = 6816768. Its totient is φ = 1947456.

The previous prime is 3955949. The next prime is 3955969. The reversal of 3955965 is 5695593.

It is not a de Polignac number, because 3955965 - 2⁴ = 3955949 is a prime.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3955969) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9949 + ... + 10338.

It is an arithmetic number, because the mean of its divisors is an integer number (426048).

Almost surely, 2^3955965 is an apocalyptic number.

It is an amenable number.

3955965 is a deficient number, since it is larger than the sum of its proper divisors (2860803).

3955965 is a wasteful number, since it uses less digits than its factorization.

3955965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20308.

The product of its digits is 182250, while the sum is 42.

The square root of 3955965 is about 1988.9607839271. The cubic root of 3955965 is about 158.1554444133.

The spelling of 3955965 in words is "three million, nine hundred fifty-five thousand, nine hundred sixty-five".