990707244 has 48 divisors (see below), whose sum is σ = 2421715968. Its totient is φ = 314626048.

The previous prime is 990707243. The next prime is 990707257. The reversal of 990707244 is 442707099.

It is a junction number, because it is equal to n+sod(n) for n = 990707196 and 990707205.

It is not an unprimeable number, because it can be changed into a prime (990707243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63949 + ... + 77915.

It is an arithmetic number, because the mean of its divisors is an integer number (50452416).

Almost surely, 2^990707244 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 990707244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1210857984).

990707244 is an abundant number, since it is smaller than the sum of its proper divisors (1431008724).

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

990707244 is a wasteful number, since it uses less digits than its factorization.

990707244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14254 (or 14252 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 42.

The square root of 990707244 is about 31475.5022835220. The cubic root of 990707244 is about 996.8927697870.

The spelling of 990707244 in words is "nine hundred ninety million, seven hundred seven thousand, two hundred forty-four".