3842891 has 6 divisors (see below), whose sum is σ = 4161420. Its totient is φ = 3547128.

The previous prime is 3842887. The next prime is 3842899. The reversal of 3842891 is 1982483.

It is a happy number.

It is not a de Polignac number, because 3842891 - 2² = 3842887 is a prime.

It is a super-2 number, since 2×3842891² = 29535622475762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3842899) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11201 + ... + 11538.

It is an arithmetic number, because the mean of its divisors is an integer number (693570).

Almost surely, 2^3842891 is an apocalyptic number.

3842891 is a deficient number, since it is larger than the sum of its proper divisors (318529).

3842891 is a wasteful number, since it uses less digits than its factorization.

3842891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22765 (or 22752 counting only the distinct ones).

The product of its digits is 13824, while the sum is 35.

The square root of 3842891 is about 1960.3293090703. The cubic root of 3842891 is about 156.6339939914.

The spelling of 3842891 in words is "three million, eight hundred forty-two thousand, eight hundred ninety-one".