4160991 has 8 divisors (see below), whose sum is σ = 5557680. Its totient is φ = 2769152.

The previous prime is 4160987. The next prime is 4161011. The reversal of 4160991 is 1990614.

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 4160991 - 2² = 4160987 is a prime.

It is a super-2 number, since 2×4160991² = 34627692204162, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4160911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2041 + ... + 3533.

It is an arithmetic number, because the mean of its divisors is an integer number (694710).

Almost surely, 2^4160991 is an apocalyptic number.

4160991 is a deficient number, since it is larger than the sum of its proper divisors (1396689).

4160991 is a wasteful number, since it uses less digits than its factorization.

4160991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2425.

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 4160991 is about 2039.8507298329. The cubic root of 4160991 is about 160.8418002887.

It can be divided in two parts, 4160 and 991, that added together give a triangular number (5151 = T₁₀₁).

The spelling of 4160991 in words is "four million, one hundred sixty thousand, nine hundred ninety-one".