999242946 has 96 divisors (see below), whose sum is σ = 2524475520. Its totient is φ = 291203424.

The previous prime is 999242929. The next prime is 999242947. The reversal of 999242946 is 649242999.

999242946 is a `hidden beast` number, since 99 + 92 + 429 + 46 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

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

It is a junction number, because it is equal to n+sod(n) for n = 999242892 and 999242901.

It is not an unprimeable number, because it can be changed into a prime (999242947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 251451 + ... + 255393.

It is an arithmetic number, because the mean of its divisors is an integer number (26296620).

Almost surely, 2^999242946 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 999242946, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1262237760).

999242946 is an abundant number, since it is smaller than the sum of its proper divisors (1525232574).

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

999242946 is a wasteful number, since it uses less digits than its factorization.

999242946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4005 (or 3980 counting only the distinct ones).

The product of its digits is 2519424, while the sum is 54.

The square root of 999242946 is about 31610.8042605689. The cubic root of 999242946 is about 999.7475849587.

The spelling of 999242946 in words is "nine hundred ninety-nine million, two hundred forty-two thousand, nine hundred forty-six".