990501876 has 216 divisors, whose sum is σ = 3206810880. Its totient is φ = 255394944.

The previous prime is 990501859. The next prime is 990501881. The reversal of 990501876 is 678105099.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1077345 + ... + 1078263.

Almost surely, 2^990501876 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 990501876, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1603405440).

990501876 is an abundant number, since it is smaller than the sum of its proper divisors (2216309004).

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

990501876 is a wasteful number, since it uses less digits than its factorization.

990501876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1003 (or 991 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The square root of 990501876 is about 31472.2397677699. The cubic root of 990501876 is about 996.8238816186.

The spelling of 990501876 in words is "nine hundred ninety million, five hundred one thousand, eight hundred seventy-six".