3956257 has 8 divisors (see below), whose sum is σ = 4206600. Its totient is φ = 3707904.

The previous prime is 3956233. The next prime is 3956261. The reversal of 3956257 is 7526593.

3956257 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 4 ways, for example, as 1263376 + 2692881 = 1124^2 + 1641^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-3956257 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3956287) 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 7 ways as a sum of consecutive naturals, for example, 6669 + ... + 7237.

It is an arithmetic number, because the mean of its divisors is an integer number (525825).

Almost surely, 2^3956257 is an apocalyptic number.

It is an amenable number.

3956257 is a deficient number, since it is larger than the sum of its proper divisors (250343).

3956257 is a wasteful number, since it uses less digits than its factorization.

3956257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 995.

The product of its digits is 56700, while the sum is 37.

The square root of 3956257 is about 1989.0341877404. The cubic root of 3956257 is about 158.1593356049.

The spelling of 3956257 in words is "three million, nine hundred fifty-six thousand, two hundred fifty-seven".