999334144 has 18 divisors (see below), whose sum is σ = 1994765150. Its totient is φ = 499666944.

The previous prime is 999334129. The next prime is 999334177. The reversal of 999334144 is 441433999.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 991494144 + 7840000 = 31488^2 + 2800^2 .

It is a junction number, because it is equal to n+sod(n) for n = 999334094 and 999334103.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1951569 + ... + 1952080.

Almost surely, 2^999334144 is an apocalyptic number.

It is an amenable number.

999334144 is a deficient number, since it is larger than the sum of its proper divisors (995431006).

999334144 is an equidigital number, since it uses as much as digits as its factorization.

999334144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3903665 (or 3903651 counting only the distinct ones).

The product of its digits is 419904, while the sum is 46.

The square root of 999334144 is about 31612.2467407807. The cubic root of 999334144 is about 999.7779987191. Note that the first 3 decimals are identical.

The spelling of 999334144 in words is "nine hundred ninety-nine million, three hundred thirty-four thousand, one hundred forty-four".