4191901 has 6 divisors (see below), whose sum is σ = 4876350. Its totient is φ = 3593016.

The previous prime is 4191893. The next prime is 4191907. The reversal of 4191901 is 1091914.

It can be written as a sum of positive squares in only one way, i.e., 2328676 + 1863225 = 1526^2 + 1365^2 .

It is not a de Polignac number, because 4191901 - 2³ = 4191893 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4191907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 42726 + ... + 42823.

It is an arithmetic number, because the mean of its divisors is an integer number (812725).

Almost surely, 2^4191901 is an apocalyptic number.

It is an amenable number.

4191901 is a deficient number, since it is larger than the sum of its proper divisors (684449).

4191901 is an equidigital number, since it uses as much as digits as its factorization.

4191901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85563 (or 85556 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 25.

The square root of 4191901 is about 2047.4132460253. The cubic root of 4191901 is about 161.2390902620.

The spelling of 4191901 in words is "four million, one hundred ninety-one thousand, nine hundred one".