16089399 has 12 divisors (see below), whose sum is σ = 23326056. Its totient is φ = 10686672.

The previous prime is 16089373. The next prime is 16089407. The reversal of 16089399 is 99398061.

16089399 is a `hidden beast` number, since 1 + 608 + 9 + 39 + 9 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-16089399 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16089319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 612 + ... + 5705.

It is an arithmetic number, because the mean of its divisors is an integer number (1943838).

Almost surely, 2^16089399 is an apocalyptic number.

16089399 is a deficient number, since it is larger than the sum of its proper divisors (7236657).

16089399 is a wasteful number, since it uses less digits than its factorization.

16089399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6606 (or 6603 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 45.

The square root of 16089399 is about 4011.1593087286. The cubic root of 16089399 is about 252.4526539336.

The spelling of 16089399 in words is "sixteen million, eighty-nine thousand, three hundred ninety-nine".