3912257 has 4 divisors (see below), whose sum is σ = 3917760. Its totient is φ = 3906756.

The previous prime is 3912247. The next prime is 3912263. The reversal of 3912257 is 7522193.

3912257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3912257 - 2¹⁸ = 3650113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3912217) 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 3 ways as a sum of consecutive naturals, for example, 1493 + ... + 3170.

It is an arithmetic number, because the mean of its divisors is an integer number (979440).

Almost surely, 2^3912257 is an apocalyptic number.

It is an amenable number.

3912257 is a deficient number, since it is larger than the sum of its proper divisors (5503).

3912257 is an equidigital number, since it uses as much as digits as its factorization.

3912257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5502.

The product of its digits is 3780, while the sum is 29.

The square root of 3912257 is about 1977.9426179745. The cubic root of 3912257 is about 157.5708189120.

The spelling of 3912257 in words is "three million, nine hundred twelve thousand, two hundred fifty-seven".