16807139 has 4 divisors (see below), whose sum is σ = 17261424. Its totient is φ = 16352856.

The previous prime is 16807129. The next prime is 16807159. The reversal of 16807139 is 93170861.

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 16807139 - 2¹² = 16803043 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16807099 and 16807108.

It is not an unprimeable number, because it can be changed into a prime (16807129) 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, 227087 + ... + 227160.

It is an arithmetic number, because the mean of its divisors is an integer number (4315356).

Almost surely, 2^16807139 is an apocalyptic number.

16807139 is a deficient number, since it is larger than the sum of its proper divisors (454285).

16807139 is an equidigital number, since it uses as much as digits as its factorization.

16807139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454284.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 16807139 is about 4099.6510827142. The cubic root of 16807139 is about 256.1521058547.

The spelling of 16807139 in words is "sixteen million, eight hundred seven thousand, one hundred thirty-nine".