4159661 has 4 divisors (see below), whose sum is σ = 4537824. Its totient is φ = 3781500.

The previous prime is 4159637. The next prime is 4159663. The reversal of 4159661 is 1669514.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4159661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4159663) 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, 189065 + ... + 189086.

It is an arithmetic number, because the mean of its divisors is an integer number (1134456).

Almost surely, 2^4159661 is an apocalyptic number.

It is an amenable number.

4159661 is a deficient number, since it is larger than the sum of its proper divisors (378163).

4159661 is a wasteful number, since it uses less digits than its factorization.

4159661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378162.

The product of its digits is 6480, while the sum is 32.

The square root of 4159661 is about 2039.5246995317. The cubic root of 4159661 is about 160.8246615517.

The spelling of 4159661 in words is "four million, one hundred fifty-nine thousand, six hundred sixty-one".