16355939 has 4 divisors (see below), whose sum is σ = 16450656. Its totient is φ = 16261224.

The previous prime is 16355929. The next prime is 16355951. The reversal of 16355939 is 93955361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93955361 = 19 ⋅4945019.

It is a cyclic number.

It is not a de Polignac number, because 16355939 - 2²⁰ = 15307363 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16355896 and 16355905.

It is not an unprimeable number, because it can be changed into a prime (16355929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47099 + ... + 47444.

It is an arithmetic number, because the mean of its divisors is an integer number (4112664).

Almost surely, 2^16355939 is an apocalyptic number.

16355939 is a deficient number, since it is larger than the sum of its proper divisors (94717).

16355939 is an equidigital number, since it uses as much as digits as its factorization.

16355939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94716.

The product of its digits is 109350, while the sum is 41.

The square root of 16355939 is about 4044.2476432583. The cubic root of 16355939 is about 253.8390852568.

The spelling of 16355939 in words is "sixteen million, three hundred fifty-five thousand, nine hundred thirty-nine".