994423906 has 32 divisors (see below), whose sum is σ = 1785427200. Its totient is φ = 406143936.

The previous prime is 994423901. The next prime is 994423907. The reversal of 994423906 is 609324499.

994423906 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

994423906 is a nontrivial binomial coefficient, being equal to C(44597, 2).

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is not an unprimeable number, because it can be changed into a prime (994423901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83620 + ... + 94768.

It is an arithmetic number, because the mean of its divisors is an integer number (55794600).

Almost surely, 2^994423906 is an apocalyptic number.

994423906 is the 44596-th triangular number.

994423906 is the 14866-th centered nonagonal number.

994423906 is a deficient number, since it is larger than the sum of its proper divisors (791003294).

994423906 is a wasteful number, since it uses less digits than its factorization.

994423906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11458.

The product of its (nonzero) digits is 419904, while the sum is 46.

The square root of 994423906 is about 31534.4875652039. The cubic root of 994423906 is about 998.1378364995.

The spelling of 994423906 in words is "nine hundred ninety-four million, four hundred twenty-three thousand, nine hundred six".