9940520 has 32 divisors (see below), whose sum is σ = 22506120. Its totient is φ = 3951360.

The previous prime is 9940519. The next prime is 9940537. The reversal of 9940520 is 250499.

9940520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 7941124 + 1999396 = 2818^2 + 1414^2 .

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, 6554 + ... + 7926.

Almost surely, 2^9940520 is an apocalyptic number.

It is an amenable number.

9940520 is an abundant number, since it is smaller than the sum of its proper divisors (12565600).

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

9940520 is a wasteful number, since it uses less digits than its factorization.

9940520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1565 (or 1561 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 9940520 is about 3152.8590200007. The cubic root of 9940520 is about 215.0154667078.

It can be divided in two parts, 99405 and 20, that multiplied together give a square (1988100 = 1410²).

The spelling of 9940520 in words is "nine million, nine hundred forty thousand, five hundred twenty".