9980140 has 24 divisors (see below), whose sum is σ = 21635712. Its totient is φ = 3863040.

The previous prime is 9980129. The next prime is 9980141. The reversal of 9980140 is 410899.

9980140 = T₄₁₆ + T₄₁₇ + ... + T₅₀₈.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (9980141) 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, 7429 + ... + 8668.

It is an arithmetic number, because the mean of its divisors is an integer number (901488).

Almost surely, 2^9980140 is an apocalyptic number.

It is an amenable number.

9980140 is an abundant number, since it is smaller than the sum of its proper divisors (11655572).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9980140 is a wasteful number, since it uses less digits than its factorization.

9980140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16137 (or 16135 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 9980140 is about 3159.1359578214. The cubic root of 9980140 is about 215.3007509056.

The spelling of 9980140 in words is "nine million, nine hundred eighty thousand, one hundred forty".