996791940 has 192 divisors, whose sum is σ = 3427038720. Its totient is φ = 239247360.

The previous prime is 996791849. The next prime is 996791947. The reversal of 996791940 is 49197699.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (996791947) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 208780 + ... + 213500.

It is an arithmetic number, because the mean of its divisors is an integer number (17849160).

Almost surely, 2^996791940 is an apocalyptic number.

996791940 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 996791940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1713519360).

996791940 is an abundant number, since it is smaller than the sum of its proper divisors (2430246780).

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

996791940 is a wasteful number, since it uses less digits than its factorization.

996791940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4779 (or 4771 counting only the distinct ones).

The product of its (nonzero) digits is 1102248, while the sum is 54.

The square root of 996791940 is about 31572.0119726317. The cubic root of 996791940 is about 998.9295011077.

The spelling of 996791940 in words is "nine hundred ninety-six million, seven hundred ninety-one thousand, nine hundred forty".