3837891 has 8 divisors (see below), whose sum is σ = 5204160. Its totient is φ = 2515112.

The previous prime is 3837877. The next prime is 3837901. The reversal of 3837891 is 1987383.

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

It is a cyclic number.

It is not a de Polignac number, because 3837891 - 2⁵ = 3837859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3837851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10665 + ... + 11018.

It is an arithmetic number, because the mean of its divisors is an integer number (650520).

Almost surely, 2^3837891 is an apocalyptic number.

3837891 is a deficient number, since it is larger than the sum of its proper divisors (1366269).

3837891 is a wasteful number, since it uses less digits than its factorization.

3837891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21745.

The product of its digits is 36288, while the sum is 39.

The square root of 3837891 is about 1959.0535980417. The cubic root of 3837891 is about 156.5660321473.

The spelling of 3837891 in words is "three million, eight hundred thirty-seven thousand, eight hundred ninety-one".