16104139 has 4 divisors (see below), whose sum is σ = 16539424. Its totient is φ = 15668856.

The previous prime is 16104131. The next prime is 16104157. The reversal of 16104139 is 93140161.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16104139 - 2³ = 16104131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16104131) 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, 217587 + ... + 217660.

It is an arithmetic number, because the mean of its divisors is an integer number (4134856).

Almost surely, 2^16104139 is an apocalyptic number.

16104139 is a deficient number, since it is larger than the sum of its proper divisors (435285).

16104139 is an equidigital number, since it uses as much as digits as its factorization.

16104139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435284.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 16104139 is about 4012.9962621463. The cubic root of 16104139 is about 252.5297236518.

The spelling of 16104139 in words is "sixteen million, one hundred four thousand, one hundred thirty-nine".