17690139 has 6 divisors (see below), whose sum is σ = 25552436. Its totient is φ = 11793420.

The previous prime is 17690137. The next prime is 17690161. The reversal of 17690139 is 93109671.

It is not a de Polignac number, because 17690139 - 2¹ = 17690137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (17690131) 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, 982777 + ... + 982794.

Almost surely, 2^17690139 is an apocalyptic number.

17690139 is a deficient number, since it is larger than the sum of its proper divisors (7862297).

17690139 is a wasteful number, since it uses less digits than its factorization.

17690139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1965577 (or 1965574 counting only the distinct ones).

The product of its (nonzero) digits is 10206, while the sum is 36.

The square root of 17690139 is about 4205.9646931471. The cubic root of 17690139 is about 260.5616016453.

The spelling of 17690139 in words is "seventeen million, six hundred ninety thousand, one hundred thirty-nine".