999999450 has 72 divisors (see below), whose sum is σ = 2828092800. Its totient is φ = 252629280.

The previous prime is 999999433. The next prime is 999999487. The reversal of 999999450 is 54999999.

999999450 is a `hidden beast` number, since 9 + 9 + 99 + 99 + 450 = 666.

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 49930 + ... + 67029.

Almost surely, 2^999999450 is an apocalyptic number.

999999450 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

999999450 is an abundant number, since it is smaller than the sum of its proper divisors (1828093350).

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

999999450 is a wasteful number, since it uses less digits than its factorization.

999999450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116996 (or 116988 counting only the distinct ones).

The product of its (nonzero) digits is 10628820, while the sum is 63.

The square root of 999999450 is about 31622.7679054190. The cubic root of 999999450 is about 999.9998166666. Note that the first 3 decimals are identical.

The spelling of 999999450 in words is "nine hundred ninety-nine million, nine hundred ninety-nine thousand, four hundred fifty".