9995940 has 96 divisors (see below), whose sum is σ = 31570560. Its totient is φ = 2625408.

The previous prime is 9995927. The next prime is 9995971. The reversal of 9995940 is 495999.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57694 + ... + 57866.

It is an arithmetic number, because the mean of its divisors is an integer number (328860).

Almost surely, 2^9995940 is an apocalyptic number.

9995940 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9995940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15785280).

9995940 is an abundant number, since it is smaller than the sum of its proper divisors (21574620).

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

9995940 is a wasteful number, since it uses less digits than its factorization.

9995940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298 (or 290 counting only the distinct ones).

The product of its (nonzero) digits is 131220, while the sum is 45.

The square root of 9995940 is about 3161.6356526330. The cubic root of 9995940 is about 215.4143083736.

It can be divided in two parts, 99959 and 40, that added together give a palindrome (99999).

The spelling of 9995940 in words is "nine million, nine hundred ninety-five thousand, nine hundred forty".