16906139 has 4 divisors (see below), whose sum is σ = 16917024. Its totient is φ = 16895256.

The previous prime is 16906133. The next prime is 16906147. The reversal of 16906139 is 93160961.

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 16906139 - 2⁸ = 16905883 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16906099 and 16906108.

It is not an unprimeable number, because it can be changed into a prime (16906133) 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, 2627 + ... + 6380.

It is an arithmetic number, because the mean of its divisors is an integer number (4229256).

Almost surely, 2^16906139 is an apocalyptic number.

16906139 is a deficient number, since it is larger than the sum of its proper divisors (10885).

16906139 is an equidigital number, since it uses as much as digits as its factorization.

16906139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10884.

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 16906139 is about 4111.7075528301. The cubic root of 16906139 is about 256.6540637728.

The spelling of 16906139 in words is "sixteen million, nine hundred six thousand, one hundred thirty-nine".