999999444 has 24 divisors (see below), whose sum is σ = 2396396128. Its totient is φ = 324324000.

The previous prime is 999999433. The next prime is 999999487. The reversal of 999999444 is 444999999.

It is a nialpdrome in base 10.

It is a zygodrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1125682 + ... + 1126569.

Almost surely, 2^999999444 is an apocalyptic number.

It is an amenable number.

999999444 is an abundant number, since it is smaller than the sum of its proper divisors (1396396684).

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

999999444 is a wasteful number, since it uses less digits than its factorization.

999999444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2252295 (or 2252293 counting only the distinct ones).

The product of its digits is 34012224, while the sum is 66.

The square root of 999999444 is about 31622.7678105507. The cubic root of 999999444 is about 999.9998146666. Note that the first 3 decimals are identical.

The spelling of 999999444 in words is "nine hundred ninety-nine million, nine hundred ninety-nine thousand, four hundred forty-four".