16669539 has 6 divisors (see below), whose sum is σ = 24078236. Its totient is φ = 11113020.

The previous prime is 16669529. The next prime is 16669559. The reversal of 16669539 is 93596661.

It is not a de Polignac number, because 16669539 - 2⁸ = 16669283 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16669494 and 16669503.

It is not an unprimeable number, because it can be changed into a prime (16669529) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 926077 + ... + 926094.

Almost surely, 2^16669539 is an apocalyptic number.

16669539 is a deficient number, since it is larger than the sum of its proper divisors (7408697).

16669539 is a wasteful number, since it uses less digits than its factorization.

16669539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1852177 (or 1852174 counting only the distinct ones).

The product of its digits is 262440, while the sum is 45.

The square root of 16669539 is about 4082.8346770351. The cubic root of 16669539 is about 255.4511505958.

The spelling of 16669539 in words is "sixteen million, six hundred sixty-nine thousand, five hundred thirty-nine".