990799104 has 72 divisors (see below), whose sum is σ = 2693174400. Its totient is φ = 323227648.

The previous prime is 990799097. The next prime is 990799171. The reversal of 990799104 is 401997099.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22372 + ... + 49820.

It is an arithmetic number, because the mean of its divisors is an integer number (37405200).

Almost surely, 2^990799104 is an apocalyptic number.

990799104 is a gapful number since it is divisible by the number (94) 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 990799104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1346587200).

990799104 is an abundant number, since it is smaller than the sum of its proper divisors (1702375296).

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

990799104 is a wasteful number, since it uses less digits than its factorization.

990799104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27515 (or 27501 counting only the distinct ones).

The product of its (nonzero) digits is 183708, while the sum is 48.

The square root of 990799104 is about 31476.9614797871. The cubic root of 990799104 is about 996.9235800122.

The spelling of 990799104 in words is "nine hundred ninety million, seven hundred ninety-nine thousand, one hundred four".