3964857 has 8 divisors (see below), whose sum is σ = 5693184. Its totient is φ = 2439888.

The previous prime is 3964847. The next prime is 3964867. The reversal of 3964857 is 7584693.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3964847) and next prime (3964867).

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

It is not a de Polignac number, because 3964857 - 2⁴ = 3964841 is a prime.

3964857 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3964837) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50793 + ... + 50870.

It is an arithmetic number, because the mean of its divisors is an integer number (711648).

Almost surely, 2^3964857 is an apocalyptic number.

It is an amenable number.

3964857 is a deficient number, since it is larger than the sum of its proper divisors (1728327).

3964857 is a wasteful number, since it uses less digits than its factorization.

3964857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101679.

The product of its digits is 181440, while the sum is 42.

The square root of 3964857 is about 1991.1948674100. The cubic root of 3964857 is about 158.2738534356.

It can be divided in two parts, 396 and 4857, that added together give a triangular number (5253 = T₁₀₂).

The spelling of 3964857 in words is "three million, nine hundred sixty-four thousand, eight hundred fifty-seven".