990144116 has 12 divisors (see below), whose sum is σ = 1866040932. Its totient is φ = 456989568.

The previous prime is 990144109. The next prime is 990144139. The reversal of 990144116 is 611441099.

It can be written as a sum of positive squares in 2 ways, for example, as 40271716 + 949872400 = 6346^2 + 30820^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9520565 + ... + 9520668.

It is an arithmetic number, because the mean of its divisors is an integer number (155503411).

Almost surely, 2^990144116 is an apocalyptic number.

It is an amenable number.

990144116 is a deficient number, since it is larger than the sum of its proper divisors (875896816).

990144116 is a wasteful number, since it uses less digits than its factorization.

990144116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19041250 (or 19041248 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 990144116 is about 31466.5555153404. Note that the first 4 decimals coincide. The cubic root of 990144116 is about 996.7038526833.

The spelling of 990144116 in words is "nine hundred ninety million, one hundred forty-four thousand, one hundred sixteen".