16383961 has 4 divisors (see below), whose sum is σ = 17873424. Its totient is φ = 14894500.

The previous prime is 16383949. The next prime is 16383973. The reversal of 16383961 is 16938361.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (16383949) and next prime (16383973).

It is a cyclic number.

It is not a de Polignac number, because 16383961 - 2⁹ = 16383449 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 16383961.

It is not an unprimeable number, because it can be changed into a prime (16383911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 744715 + ... + 744736.

It is an arithmetic number, because the mean of its divisors is an integer number (4468356).

Almost surely, 2^16383961 is an apocalyptic number.

16383961 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16383961 is a deficient number, since it is larger than the sum of its proper divisors (1489463).

16383961 is a wasteful number, since it uses less digits than its factorization.

16383961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1489462.

The product of its digits is 23328, while the sum is 37.

The square root of 16383961 is about 4047.7105874803. The cubic root of 16383961 is about 253.9839667892.

The spelling of 16383961 in words is "sixteen million, three hundred eighty-three thousand, nine hundred sixty-one".