999600140 has 192 divisors, whose sum is σ = 2746856448. Its totient is φ = 296524800.

The previous prime is 999600139. The next prime is 999600149. The reversal of 999600140 is 41006999.

It is a junction number, because it is equal to n+sod(n) for n = 999600094 and 999600103.

It is not an unprimeable number, because it can be changed into a prime (999600149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3019775 + ... + 3020105.

It is an arithmetic number, because the mean of its divisors is an integer number (14306544).

Almost surely, 2^999600140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 999600140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1373428224).

999600140 is an abundant number, since it is smaller than the sum of its proper divisors (1747256308).

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

999600140 is a wasteful number, since it uses less digits than its factorization.

999600140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448 (or 446 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 38.

The square root of 999600140 is about 31616.4536278185. The cubic root of 999600140 is about 999.8666955641.

The spelling of 999600140 in words is "nine hundred ninety-nine million, six hundred thousand, one hundred forty".