16005939 has 4 divisors (see below), whose sum is σ = 21341256. Its totient is φ = 10670624.

The previous prime is 16005931. The next prime is 16005943. The reversal of 16005939 is 93950061.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93950061 = 3 ⋅31316687.

It is a cyclic number.

It is not a de Polignac number, because 16005939 - 2³ = 16005931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16005931) 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, 2667654 + ... + 2667659.

It is an arithmetic number, because the mean of its divisors is an integer number (5335314).

Almost surely, 2^16005939 is an apocalyptic number.

16005939 is a deficient number, since it is larger than the sum of its proper divisors (5335317).

16005939 is an equidigital number, since it uses as much as digits as its factorization.

16005939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5335316.

The product of its (nonzero) digits is 7290, while the sum is 33.

The square root of 16005939 is about 4000.7423061227. The cubic root of 16005939 is about 252.0153839185.

The spelling of 16005939 in words is "sixteen million, five thousand, nine hundred thirty-nine".