999994432 has 28 divisors (see below), whose sum is σ = 1985368140. Its totient is φ = 499744256.

The previous prime is 999994427. The next prime is 999994433. The reversal of 999994432 is 234499999.

It can be written as a sum of positive squares in 2 ways, for example, as 650454016 + 349540416 = 25504^2 + 18696^2 .

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (999994433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 248694 + ... + 252682.

It is an arithmetic number, because the mean of its divisors is an integer number (70906005).

Almost surely, 2^999994432 is an apocalyptic number.

It is an amenable number.

999994432 is a deficient number, since it is larger than the sum of its proper divisors (985373708).

999994432 is a wasteful number, since it uses less digits than its factorization.

999994432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7918 (or 7908 counting only the distinct ones).

The product of its digits is 5668704, while the sum is 58.

The square root of 999994432 is about 31622.6885637512. The cubic root of 999994432 is about 999.9981439966.

The spelling of 999994432 in words is "nine hundred ninety-nine million, nine hundred ninety-four thousand, four hundred thirty-two".