4191961 has 4 divisors (see below), whose sum is σ = 4229172. Its totient is φ = 4154752.

The previous prime is 4191953. The next prime is 4191973. The reversal of 4191961 is 1691914.

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

It can be written as a sum of positive squares in 2 ways, for example, as 366025 + 3825936 = 605^2 + 1956^2 .

It is a cyclic number.

It is not a de Polignac number, because 4191961 - 2³ = 4191953 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a pancake number, because a pancake can be divided into 4191961 parts by 2895 straight cuts.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4191931) 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 3 ways as a sum of consecutive naturals, for example, 18436 + ... + 18661.

It is an arithmetic number, because the mean of its divisors is an integer number (1057293).

Almost surely, 2^4191961 is an apocalyptic number.

It is an amenable number.

4191961 is a deficient number, since it is larger than the sum of its proper divisors (37211).

4191961 is a wasteful number, since it uses less digits than its factorization.

4191961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37210.

The product of its digits is 1944, while the sum is 31.

The square root of 4191961 is about 2047.4278986084. The cubic root of 4191961 is about 161.2398595470.

The spelling of 4191961 in words is "four million, one hundred ninety-one thousand, nine hundred sixty-one".