994427784100 has 27 divisors (see below), whose sum is σ = 2157929931171. Its totient is φ = 397767124800.

The previous prime is 994427784071. The next prime is 994427784109. The reversal of 994427784100 is 1487724499.

The square root of 994427784100 is 997210.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 59431613796 + 934996170304 = 243786^2 + 966952^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (994427784109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 9922240 + ... + 10021960.

Almost surely, 2^994427784100 is an apocalyptic number.

994427784100 is the 997210-th square number.

It is an amenable number.

994427784100 is an abundant number, since it is smaller than the sum of its proper divisors (1163502147071).

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

994427784100 is an frugal number, since it uses more digits than its factorization.

994427784100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199456 (or 99728 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 55.

The spelling of 994427784100 in words is "nine hundred ninety-four billion, four hundred twenty-seven million, seven hundred eighty-four thousand, one hundred".