4181689 has 4 divisors (see below), whose sum is σ = 4186624. Its totient is φ = 4176756.

The previous prime is 4181669. The next prime is 4181693. The reversal of 4181689 is 9861814.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 4181689 - 2⁵ = 4181657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4181669) 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, 837 + ... + 3010.

It is an arithmetic number, because the mean of its divisors is an integer number (1046656).

Almost surely, 2^4181689 is an apocalyptic number.

It is an amenable number.

4181689 is a deficient number, since it is larger than the sum of its proper divisors (4935).

4181689 is a wasteful number, since it uses less digits than its factorization.

4181689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4934.

The product of its digits is 13824, while the sum is 37.

The square root of 4181689 is about 2044.9178467606. The cubic root of 4181689 is about 161.1080508689.

It can be divided in two parts, 41816 and 89, that added together give a triangular number (41905 = T₂₈₉).

The spelling of 4181689 in words is "four million, one hundred eighty-one thousand, six hundred eighty-nine".