9790138 has 4 divisors (see below), whose sum is σ = 14685210. Its totient is φ = 4895068.

The previous prime is 9790133. The next prime is 9790153. The reversal of 9790138 is 8310979.

9790138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 9345249 + 444889 = 3057^2 + 667^2 .

It is a junction number, because it is equal to n+sod(n) for n = 9790097 and 9790106.

It is not an unprimeable number, because it can be changed into a prime (9790133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2447533 + ... + 2447536.

Almost surely, 2^9790138 is an apocalyptic number.

9790138 is a deficient number, since it is larger than the sum of its proper divisors (4895072).

9790138 is a wasteful number, since it uses less digits than its factorization.

9790138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4895071.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 9790138 is about 3128.9196218503. The cubic root of 9790138 is about 213.9256882343.

The spelling of 9790138 in words is "nine million, seven hundred ninety thousand, one hundred thirty-eight".