4166891 has 4 divisors (see below), whose sum is σ = 4213800. Its totient is φ = 4119984.

The previous prime is 4166873. The next prime is 4166893. The reversal of 4166891 is 1986614.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4166891 - 2¹⁴ = 4150507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4166893) 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, 23321 + ... + 23498.

It is an arithmetic number, because the mean of its divisors is an integer number (1053450).

Almost surely, 2^4166891 is an apocalyptic number.

4166891 is a deficient number, since it is larger than the sum of its proper divisors (46909).

4166891 is an equidigital number, since it uses as much as digits as its factorization.

4166891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46908.

The product of its digits is 10368, while the sum is 35.

The square root of 4166891 is about 2041.2964017996. The cubic root of 4166891 is about 160.9177852685.

The spelling of 4166891 in words is "four million, one hundred sixty-six thousand, eight hundred ninety-one".