9170138 has 4 divisors (see below), whose sum is σ = 13755210. Its totient is φ = 4585068.

The previous prime is 9170129. The next prime is 9170143. The reversal of 9170138 is 8310719.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 7524049 + 1646089 = 2743^2 + 1283^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 9170138.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2292533 + ... + 2292536.

Almost surely, 2^9170138 is an apocalyptic number.

9170138 is a deficient number, since it is larger than the sum of its proper divisors (4585072).

9170138 is a wasteful number, since it uses less digits than its factorization.

9170138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4585071.

The product of its (nonzero) digits is 1512, while the sum is 29.

The square root of 9170138 is about 3028.2235716671. The cubic root of 9170138 is about 209.3109539907.

The spelling of 9170138 in words is "nine million, one hundred seventy thousand, one hundred thirty-eight".