3845891 has 16 divisors (see below), whose sum is σ = 4669440. Its totient is φ = 3097440.

The previous prime is 3845887. The next prime is 3845903. The reversal of 3845891 is 1985483.

3845891 is digitally balanced in base 8, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 3845891 - 2² = 3845887 is a prime.

It is a Duffinian number.

3845891 is strictly pandigital in base 8.

It is not an unprimeable number, because it can be changed into a prime (3845861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7790 + ... + 8268.

It is an arithmetic number, because the mean of its divisors is an integer number (291840).

Almost surely, 2^3845891 is an apocalyptic number.

3845891 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

3845891 is a deficient number, since it is larger than the sum of its proper divisors (823549).

3845891 is a wasteful number, since it uses less digits than its factorization.

3845891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554.

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

The square root of 3845891 is about 1961.0943373535. The cubic root of 3845891 is about 156.6747428058.

The spelling of 3845891 in words is "three million, eight hundred forty-five thousand, eight hundred ninety-one".