9960040 has 24 divisors (see below), whose sum is σ = 22455090. Its totient is φ = 3976032.

The previous prime is 9960031. The next prime is 9960043. The reversal of 9960040 is 400699.

It can be written as a sum of positive squares in only one way, i.e., 8964036 + 996004 = 2994^2 + 998^2 .

It is a junction number, because it is equal to n+sod(n) for n = 9959990 and 9960008.

It is not an unprimeable number, because it can be changed into a prime (9960043) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19711 + ... + 20209.

Almost surely, 2^9960040 is an apocalyptic number.

It is an amenable number.

9960040 is an abundant number, since it is smaller than the sum of its proper divisors (12495050).

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

9960040 is an equidigital number, since it uses as much as digits as its factorization.

9960040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1009 (or 506 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 9960040 is about 3155.9531048480. The cubic root of 9960040 is about 215.1561152067.

The spelling of 9960040 in words is "nine million, nine hundred sixty thousand, forty".