990144108 has 24 divisors (see below), whose sum is σ = 2567040560. Its totient is φ = 330048000.

The previous prime is 990144091. The next prime is 990144109. The reversal of 990144108 is 801441099.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (990144109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4583893 + ... + 4584108.

Almost surely, 2^990144108 is an apocalyptic number.

It is an amenable number.

990144108 is an abundant number, since it is smaller than the sum of its proper divisors (1576896452).

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

990144108 is a wasteful number, since it uses less digits than its factorization.

990144108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9168014 (or 9168006 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 990144108 is about 31466.5553882213. Note that the first 3 decimals coincide. The cubic root of 990144108 is about 996.7038499990.

The spelling of 990144108 in words is "nine hundred ninety million, one hundred forty-four thousand, one hundred eight".