16419983 has 4 divisors (see below), whose sum is σ = 16729848. Its totient is φ = 16110120.

The previous prime is 16419979. The next prime is 16419989. The reversal of 16419983 is 38991461.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16419983 - 2² = 16419979 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16419983.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16419989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154853 + ... + 154958.

It is an arithmetic number, because the mean of its divisors is an integer number (4182462).

Almost surely, 2^16419983 is an apocalyptic number.

16419983 is a deficient number, since it is larger than the sum of its proper divisors (309865).

16419983 is an equidigital number, since it uses as much as digits as its factorization.

16419983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309864.

The product of its digits is 46656, while the sum is 41.

The square root of 16419983 is about 4052.1578202237. The cubic root of 16419983 is about 254.1699680780.

The spelling of 16419983 in words is "sixteen million, four hundred nineteen thousand, nine hundred eighty-three".