999294835140 has 384 divisors, whose sum is σ = 3581061120000. Its totient is φ = 226615656960.

The previous prime is 999294835127. The next prime is 999294835141. The reversal of 999294835140 is 41538492999.

999294835140 is a `hidden beast` number, since 9 + 9 + 9 + 2 + 9 + 483 + 5 + 140 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (999294835141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 341404357 + ... + 341407283.

It is an arithmetic number, because the mean of its divisors is an integer number (9325680000).

Almost surely, 2^999294835140 is an apocalyptic number.

999294835140 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 999294835140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1790530560000).

999294835140 is an abundant number, since it is smaller than the sum of its proper divisors (2581766284860).

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

999294835140 is a wasteful number, since it uses less digits than its factorization.

999294835140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3632 (or 3624 counting only the distinct ones).

The product of its (nonzero) digits is 25194240, while the sum is 63.

The spelling of 999294835140 in words is "nine hundred ninety-nine billion, two hundred ninety-four million, eight hundred thirty-five thousand, one hundred forty".