3956949 has 6 divisors (see below), whose sum is σ = 5715606. Its totient is φ = 2637960.

The previous prime is 3956941. The next prime is 3956957. The reversal of 3956949 is 9496593.

It is a happy number.

3956949 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (3956941) and next prime (3956957).

It can be written as a sum of positive squares in only one way, i.e., 3802500 + 154449 = 1950^2 + 393^2 .

It is not a de Polignac number, because 3956949 - 2³ = 3956941 is a prime.

3956949 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3956941) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 219822 + ... + 219839.

It is an arithmetic number, because the mean of its divisors is an integer number (952601).

Almost surely, 2^3956949 is an apocalyptic number.

It is an amenable number.

3956949 is a deficient number, since it is larger than the sum of its proper divisors (1758657).

3956949 is a wasteful number, since it uses less digits than its factorization.

3956949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439667 (or 439664 counting only the distinct ones).

The product of its digits is 262440, while the sum is 45.

The square root of 3956949 is about 1989.2081339066. The cubic root of 3956949 is about 158.1685564315.

The spelling of 3956949 in words is "three million, nine hundred fifty-six thousand, nine hundred forty-nine".