989961700 has 108 divisors (see below), whose sum is σ = 2691345972. Its totient is φ = 313286400.

The previous prime is 989961691. The next prime is 989961761. The reversal of 989961700 is 7169989.

989961700 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 34409956 + 955551744 = 5866^2 + 30912^2 .

It is a Harshad number since it is a multiple of its sum of digits (49).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 55930 + ... + 71470.

Almost surely, 2^989961700 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 989961700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1345672986).

989961700 is an abundant number, since it is smaller than the sum of its proper divisors (1701384272).

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

989961700 is a wasteful number, since it uses less digits than its factorization.

989961700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15582 (or 15568 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 49.

The square root of 989961700 is about 31463.6568122652. The cubic root of 989961700 is about 996.6426407535.

The spelling of 989961700 in words is "nine hundred eighty-nine million, nine hundred sixty-one thousand, seven hundred".