16690139 has 4 divisors (see below), whose sum is σ = 16783560. Its totient is φ = 16596720.

The previous prime is 16690133. The next prime is 16690211. The reversal of 16690139 is 93109661.

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 16690139 - 2¹⁶ = 16624603 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16690099 and 16690108.

It is not an unprimeable number, because it can be changed into a prime (16690133) 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, 46442 + ... + 46799.

It is an arithmetic number, because the mean of its divisors is an integer number (4195890).

Almost surely, 2^16690139 is an apocalyptic number.

16690139 is a deficient number, since it is larger than the sum of its proper divisors (93421).

16690139 is an equidigital number, since it uses as much as digits as its factorization.

16690139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93420.

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

The square root of 16690139 is about 4085.3566551771. The cubic root of 16690139 is about 255.5563350183.

The spelling of 16690139 in words is "sixteen million, six hundred ninety thousand, one hundred thirty-nine".