3974857 has 4 divisors (see below), whose sum is σ = 4184080. Its totient is φ = 3765636.

The previous prime is 3974849. The next prime is 3974881. The reversal of 3974857 is 7584793.

It is a happy number.

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 3974857 - 2³ = 3974849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3974897) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104583 + ... + 104620.

It is an arithmetic number, because the mean of its divisors is an integer number (1046020).

Almost surely, 2^3974857 is an apocalyptic number.

It is an amenable number.

3974857 is a deficient number, since it is larger than the sum of its proper divisors (209223).

3974857 is a wasteful number, since it uses less digits than its factorization.

3974857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209222.

The product of its digits is 211680, while the sum is 43.

The square root of 3974857 is about 1993.7043411700. The cubic root of 3974857 is about 158.4068056670.

It can be divided in two parts, 3 and 974857, that multiplied together give a triangular number (2924571 = T₂₄₁₈).

The spelling of 3974857 in words is "three million, nine hundred seventy-four thousand, eight hundred fifty-seven".