3854891 has 4 divisors (see below), whose sum is σ = 4057800. Its totient is φ = 3651984.

The previous prime is 3854843. The next prime is 3854897. The reversal of 3854891 is 1984583.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1984583 = 59 ⋅33637.

It is a cyclic number.

It is not a de Polignac number, because 3854891 - 2⁶ = 3854827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3854897) 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, 101426 + ... + 101463.

It is an arithmetic number, because the mean of its divisors is an integer number (1014450).

Almost surely, 2^3854891 is an apocalyptic number.

3854891 is a deficient number, since it is larger than the sum of its proper divisors (202909).

3854891 is a wasteful number, since it uses less digits than its factorization.

3854891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202908.

The product of its digits is 34560, while the sum is 38.

The square root of 3854891 is about 1963.3876336577. The cubic root of 3854891 is about 156.7968622472.

The spelling of 3854891 in words is "three million, eight hundred fifty-four thousand, eight hundred ninety-one".