4171861 has 8 divisors (see below), whose sum is σ = 4377600. Its totient is φ = 3971088.

The previous prime is 4171841. The next prime is 4171879. The reversal of 4171861 is 1681714.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4171861 - 2¹³ = 4163669 is a prime.

It is a Duffinian number.

4171861 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4171801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 540 + ... + 2938.

It is an arithmetic number, because the mean of its divisors is an integer number (547200).

Almost surely, 2^4171861 is an apocalyptic number.

It is an amenable number.

4171861 is a deficient number, since it is larger than the sum of its proper divisors (205739).

4171861 is a wasteful number, since it uses less digits than its factorization.

4171861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2483.

The product of its digits is 1344, while the sum is 28.

The square root of 4171861 is about 2042.5134026488. The cubic root of 4171861 is about 160.9817373161.

It can be divided in two parts, 417 and 1861, that added together give a triangular number (2278 = T₆₇).

The spelling of 4171861 in words is "four million, one hundred seventy-one thousand, eight hundred sixty-one".