9940900 has 18 divisors (see below), whose sum is σ = 21571970. Its totient is φ = 3976320.

The previous prime is 9940877. The next prime is 9940907. The reversal of 9940900 is 90499.

It can be written as a sum of positive squares in 3 ways, for example, as 1048576 + 8892324 = 1024^2 + 2982^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (9940907) 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, 49605 + ... + 49804.

Almost surely, 2^9940900 is an apocalyptic number.

It is an amenable number.

9940900 is an abundant number, since it is smaller than the sum of its proper divisors (11631070).

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

9940900 is a wasteful number, since it uses less digits than its factorization.

9940900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99423 (or 99416 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 9940900 is about 3152.9192821891. The cubic root of 9940900 is about 215.0182064986.

It can be divided in two parts, 9 and 940900, that multiplied together give a square (8468100 = 2910²).

The spelling of 9940900 in words is "nine million, nine hundred forty thousand, nine hundred".