16065139 has 4 divisors (see below), whose sum is σ = 16074856. Its totient is φ = 16055424.

The previous prime is 16065131. The next prime is 16065149. The reversal of 16065139 is 93156061.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 16065139 - 2³ = 16065131 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 16065139.

It is not an unprimeable number, because it can be changed into a prime (16065131) 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, 1689 + ... + 5914.

It is an arithmetic number, because the mean of its divisors is an integer number (4018714).

Almost surely, 2^16065139 is an apocalyptic number.

16065139 is a deficient number, since it is larger than the sum of its proper divisors (9717).

16065139 is an equidigital number, since it uses as much as digits as its factorization.

16065139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9716.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 16065139 is about 4008.1341045429. The cubic root of 16065139 is about 252.3257052889.

The spelling of 16065139 in words is "sixteen million, sixty-five thousand, one hundred thirty-nine".