3955966 has 24 divisors (see below), whose sum is σ = 7095816. Its totient is φ = 1648080.

The previous prime is 3955949. The next prime is 3955969. The reversal of 3955966 is 6695593.

It is a happy number.

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 11 ways as a sum of consecutive naturals, for example, 3081 + ... + 4171.

It is an arithmetic number, because the mean of its divisors is an integer number (295659).

Almost surely, 2^3955966 is an apocalyptic number.

3955966 is a deficient number, since it is larger than the sum of its proper divisors (3139850).

3955966 is a wasteful number, since it uses less digits than its factorization.

3955966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1144 (or 1137 counting only the distinct ones).

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

The square root of 3955966 is about 1988.9610353147. The cubic root of 3955966 is about 158.1554577396.

The spelling of 3955966 in words is "three million, nine hundred fifty-five thousand, nine hundred sixty-six".