16171089 has 8 divisors (see below), whose sum is σ = 23521632. Its totient is φ = 9800640.

The previous prime is 16171079. The next prime is 16171117. The reversal of 16171089 is 98017161.

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

It is not a de Polignac number, because 16171089 - 2¹² = 16166993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 490033 = 16171089 / (1 + 6 + 1 + 7 + 1 + 0 + 8 + 9).

It is not an unprimeable number, because it can be changed into a prime (16171019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 244984 + ... + 245049.

It is an arithmetic number, because the mean of its divisors is an integer number (2940204).

Almost surely, 2^16171089 is an apocalyptic number.

It is an amenable number.

16171089 is a deficient number, since it is larger than the sum of its proper divisors (7350543).

16171089 is a wasteful number, since it uses less digits than its factorization.

16171089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490047.

The product of its (nonzero) digits is 3024, while the sum is 33.

The square root of 16171089 is about 4021.3292578450. The cubic root of 16171089 is about 252.8791884674.

The spelling of 16171089 in words is "sixteen million, one hundred seventy-one thousand, eighty-nine".