166090443 has 8 divisors (see below), whose sum is σ = 223070928. Its totient is φ = 109918464.

The previous prime is 166090439. The next prime is 166090471. The reversal of 166090443 is 344090661.

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

It is not a de Polignac number, because 166090443 - 2² = 166090439 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166090423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 201646 + ... + 202467.

It is an arithmetic number, because the mean of its divisors is an integer number (27883866).

Almost surely, 2^166090443 is an apocalyptic number.

166090443 is a deficient number, since it is larger than the sum of its proper divisors (56980485).

166090443 is a wasteful number, since it uses less digits than its factorization.

166090443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404253.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 166090443 is about 12887.6081178782. The cubic root of 166090443 is about 549.6862596324.

The spelling of 166090443 in words is "one hundred sixty-six million, ninety thousand, four hundred forty-three".