3891011 has 4 divisors (see below), whose sum is σ = 4119912. Its totient is φ = 3662112.

The previous prime is 3890981. The next prime is 3891037. The reversal of 3891011 is 1101983.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1101983 = 157 ⋅7019.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3891011 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (3891061) 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, 114425 + ... + 114458.

It is an arithmetic number, because the mean of its divisors is an integer number (1029978).

Almost surely, 2^3891011 is an apocalyptic number.

3891011 is a deficient number, since it is larger than the sum of its proper divisors (228901).

3891011 is a wasteful number, since it uses less digits than its factorization.

3891011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228900.

The product of its (nonzero) digits is 216, while the sum is 23.

The square root of 3891011 is about 1972.5645743549. The cubic root of 3891011 is about 157.2850650115.

Adding to 3891011 its reverse (1101983), we get a palindrome (4992994).

The spelling of 3891011 in words is "three million, eight hundred ninety-one thousand, eleven".