16389983 has 2 divisors, whose sum is σ = 16389984. Its totient is φ = 16389982.

The previous prime is 16389949. The next prime is 16389991. The reversal of 16389983 is 38998361.

It is a strong prime.

It is an emirp because it is prime and its reverse (38998361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16389983 - 2¹⁶ = 16324447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16389283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8194991 + 8194992.

It is an arithmetic number, because the mean of its divisors is an integer number (8194992).

Almost surely, 2^16389983 is an apocalyptic number.

16389983 is a deficient number, since it is larger than the sum of its proper divisors (1).

16389983 is an equidigital number, since it uses as much as digits as its factorization.

16389983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 279936, while the sum is 47.

The square root of 16389983 is about 4048.4543964333. The cubic root of 16389983 is about 254.0150806348.

The spelling of 16389983 in words is "sixteen million, three hundred eighty-nine thousand, nine hundred eighty-three".