9980138 has 16 divisors (see below), whose sum is σ = 17527104. Its totient is φ = 4172640.

The previous prime is 9980129. The next prime is 9980141. The reversal of 9980138 is 8310899.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8120 + ... + 9267.

It is an arithmetic number, because the mean of its divisors is an integer number (1095444).

Almost surely, 2^9980138 is an apocalyptic number.

9980138 is a deficient number, since it is larger than the sum of its proper divisors (7546966).

9980138 is a wasteful number, since it uses less digits than its factorization.

9980138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17437.

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 9980138 is about 3159.1356412791. The cubic root of 9980138 is about 215.3007365236.

The spelling of 9980138 in words is "nine million, nine hundred eighty thousand, one hundred thirty-eight".