9973138 has 16 divisors (see below), whose sum is σ = 17997120. Its totient is φ = 4049136.

The previous prime is 9973133. The next prime is 9973147. The reversal of 9973138 is 8313799.

It is a self number, because there is not a number n which added to its sum of digits gives 9973138.

It is not an unprimeable number, because it can be changed into a prime (9973133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18481 + ... + 19012.

It is an arithmetic number, because the mean of its divisors is an integer number (1124820).

Almost surely, 2^9973138 is an apocalyptic number.

9973138 is a deficient number, since it is larger than the sum of its proper divisors (8023982).

9973138 is a wasteful number, since it uses less digits than its factorization.

9973138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37521.

The product of its digits is 40824, while the sum is 40.

The square root of 9973138 is about 3158.0275489615. The cubic root of 9973138 is about 215.2503879329.

It can be divided in two parts, 99 and 73138, that added together give a palindrome (73237).

The spelling of 9973138 in words is "nine million, nine hundred seventy-three thousand, one hundred thirty-eight".