999079542 has 32 divisors (see below), whose sum is σ = 2222438400. Its totient is φ = 332687304.

The previous prime is 999079541. The next prime is 999079559. The reversal of 999079542 is 245970999.

999079542 is a `hidden beast` number, since 9 + 9 + 90 + 7 + 9 + 542 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999079541) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 47203 + ... + 65009.

It is an arithmetic number, because the mean of its divisors is an integer number (69451200).

Almost surely, 2^999079542 is an apocalyptic number.

999079542 is an abundant number, since it is smaller than the sum of its proper divisors (1223358858).

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

999079542 is a wasteful number, since it uses less digits than its factorization.

999079542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18857 (or 18851 counting only the distinct ones).

The product of its (nonzero) digits is 1837080, while the sum is 54.

The square root of 999079542 is about 31608.2195322672. The cubic root of 999079542 is about 999.6930864804.

The spelling of 999079542 in words is "nine hundred ninety-nine million, seventy-nine thousand, five hundred forty-two".