9915380 has 12 divisors (see below), whose sum is σ = 20822340. Its totient is φ = 3966144.

The previous prime is 9915379. The next prime is 9915391. The reversal of 9915380 is 835199.

It can be written as a sum of positive squares in 2 ways, for example, as 3794704 + 6120676 = 1948^2 + 2474^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 9915380.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 247865 + ... + 247904.

It is an arithmetic number, because the mean of its divisors is an integer number (1735195).

Almost surely, 2^9915380 is an apocalyptic number.

It is an amenable number.

9915380 is an abundant number, since it is smaller than the sum of its proper divisors (10906960).

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

9915380 is a wasteful number, since it uses less digits than its factorization.

9915380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495778 (or 495776 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 9915380 is about 3148.8696384576. The cubic root of 9915380 is about 214.8340525849.

The spelling of 9915380 in words is "nine million, nine hundred fifteen thousand, three hundred eighty".