16837989 has 8 divisors (see below), whose sum is σ = 25657920. Its totient is φ = 9621696.

The previous prime is 16837969. The next prime is 16838023. The reversal of 16837989 is 98973861.

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

It is not a de Polignac number, because 16837989 - 2⁵ = 16837957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16837969) 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, 400884 + ... + 400925.

It is an arithmetic number, because the mean of its divisors is an integer number (3207240).

Almost surely, 2^16837989 is an apocalyptic number.

It is an amenable number.

16837989 is a deficient number, since it is larger than the sum of its proper divisors (8819931).

16837989 is an equidigital number, since it uses as much as digits as its factorization.

16837989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 801819.

The product of its digits is 653184, while the sum is 51.

The square root of 16837989 is about 4103.4118730637. The cubic root of 16837989 is about 256.3087349797.

The spelling of 16837989 in words is "sixteen million, eight hundred thirty-seven thousand, nine hundred eighty-nine".