994643995 has 8 divisors (see below), whose sum is σ = 1194410880. Its totient is φ = 795156480.

The previous prime is 994643981. The next prime is 994644017. The reversal of 994643995 is 599346499.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 994643995 - 2¹⁷ = 994512923 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61926 + ... + 76315.

It is an arithmetic number, because the mean of its divisors is an integer number (149301360).

Almost surely, 2^994643995 is an apocalyptic number.

994643995 is a deficient number, since it is larger than the sum of its proper divisors (199766885).

994643995 is a wasteful number, since it uses less digits than its factorization.

994643995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139685.

The product of its digits is 9447840, while the sum is 58.

The square root of 994643995 is about 31537.9770277042. The cubic root of 994643995 is about 998.2114680606.

The spelling of 994643995 in words is "nine hundred ninety-four million, six hundred forty-three thousand, nine hundred ninety-five".