16468139 has 4 divisors (see below), whose sum is σ = 16747320. Its totient is φ = 16188960.

The previous prime is 16468129. The next prime is 16468171. The reversal of 16468139 is 93186461.

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 16468139 - 2¹² = 16464043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16468129) 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, 139502 + ... + 139619.

It is an arithmetic number, because the mean of its divisors is an integer number (4186830).

Almost surely, 2^16468139 is an apocalyptic number.

16468139 is a deficient number, since it is larger than the sum of its proper divisors (279181).

16468139 is an equidigital number, since it uses as much as digits as its factorization.

16468139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279180.

The product of its digits is 31104, while the sum is 38.

The square root of 16468139 is about 4058.0954892659. The cubic root of 16468139 is about 254.4181994136.

The spelling of 16468139 in words is "sixteen million, four hundred sixty-eight thousand, one hundred thirty-nine".