16104989 has 8 divisors (see below), whose sum is σ = 17004000. Its totient is φ = 15211152.

The previous prime is 16104961. The next prime is 16105003. The reversal of 16104989 is 98940161.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 16104989 - 2⁸ = 16104733 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16104289) 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, 6302 + ... + 8480.

It is an arithmetic number, because the mean of its divisors is an integer number (2125500).

Almost surely, 2^16104989 is an apocalyptic number.

16104989 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

16104989 is a deficient number, since it is larger than the sum of its proper divisors (899011).

16104989 is a wasteful number, since it uses less digits than its factorization.

16104989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2587.

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 16104989 is about 4013.1021666536. The cubic root of 16104989 is about 252.5341665363.

The spelling of 16104989 in words is "sixteen million, one hundred four thousand, nine hundred eighty-nine".