16424989 has 8 divisors (see below), whose sum is σ = 18818240. Its totient is φ = 14043456.

The previous prime is 16424981. The next prime is 16424999. The reversal of 16424989 is 98942461.

16424989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 16424989 - 2³ = 16424981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16424981) 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, 322 + ... + 5740.

It is an arithmetic number, because the mean of its divisors is an integer number (2352280).

Almost surely, 2^16424989 is an apocalyptic number.

It is an amenable number.

16424989 is a deficient number, since it is larger than the sum of its proper divisors (2393251).

16424989 is an equidigital number, since it uses as much as digits as its factorization.

16424989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5859.

The product of its digits is 124416, while the sum is 43.

The square root of 16424989 is about 4052.7754687374. The cubic root of 16424989 is about 254.1957952582.

The spelling of 16424989 in words is "sixteen million, four hundred twenty-four thousand, nine hundred eighty-nine".