3897956 has 6 divisors (see below), whose sum is σ = 6821430. Its totient is φ = 1948976.

The previous prime is 3897941. The next prime is 3897967. The reversal of 3897956 is 6597983.

It can be written as a sum of positive squares in only one way, i.e., 3724900 + 173056 = 1930^2 + 416^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 3897956.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 487241 + ... + 487248.

It is an arithmetic number, because the mean of its divisors is an integer number (1136905).

Almost surely, 2^3897956 is an apocalyptic number.

It is an amenable number.

3897956 is a deficient number, since it is larger than the sum of its proper divisors (2923474).

3897956 is a wasteful number, since it uses less digits than its factorization.

3897956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 974493 (or 974491 counting only the distinct ones).

The product of its digits is 408240, while the sum is 47.

The square root of 3897956 is about 1974.3241881717. The cubic root of 3897956 is about 157.3785878789.

The spelling of 3897956 in words is "three million, eight hundred ninety-seven thousand, nine hundred fifty-six".