16747989 has 8 divisors (see below), whose sum is σ = 22600032. Its totient is φ = 11030640.

The previous prime is 16747981. The next prime is 16748003. The reversal of 16747989 is 98974761.

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

It is not a de Polignac number, because 16747989 - 2³ = 16747981 is a prime.

It is a super-3 number, since 3×16747989³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16747981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33382 + ... + 33879.

It is an arithmetic number, because the mean of its divisors is an integer number (2825004).

Almost surely, 2^16747989 is an apocalyptic number.

It is an amenable number.

16747989 is a deficient number, since it is larger than the sum of its proper divisors (5852043).

16747989 is an equidigital number, since it uses as much as digits as its factorization.

16747989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67347.

The product of its digits is 762048, while the sum is 51.

The square root of 16747989 is about 4092.4306958090. The cubic root of 16747989 is about 255.8512573841.

The spelling of 16747989 in words is "sixteen million, seven hundred forty-seven thousand, nine hundred eighty-nine".