9958540 has 24 divisors (see below), whose sum is σ = 21823200. Its totient is φ = 3810048.

The previous prime is 9958537. The next prime is 9958573. The reversal of 9958540 is 458599.

It is a junction number, because it is equal to n+sod(n) for n = 9958493 and 9958502.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10365 + ... + 11284.

It is an arithmetic number, because the mean of its divisors is an integer number (909300).

Almost surely, 2^9958540 is an apocalyptic number.

It is an amenable number.

9958540 is an abundant number, since it is smaller than the sum of its proper divisors (11864660).

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

9958540 is a wasteful number, since it uses less digits than its factorization.

9958540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21681 (or 21679 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 40.

The square root of 9958540 is about 3155.7154497831. The cubic root of 9958540 is about 215.1453136980.

The spelling of 9958540 in words is "nine million, nine hundred fifty-eight thousand, five hundred forty".