994467072169 has 4 divisors (see below), whose sum is σ = 1021344560644. Its totient is φ = 967589583696.

The previous prime is 994467072143. The next prime is 994467072187. The reversal of 994467072169 is 961270764499.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 952113432169 + 42353640000 = 975763^2 + 205800^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-994467072169 is a prime.

It is a super-2 number, since 2×994467072169² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 994467072169.

It is not an unprimeable number, because it can be changed into a prime (994467072869) 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, 13438744182 + ... + 13438744255.

It is an arithmetic number, because the mean of its divisors is an integer number (255336140161).

Almost surely, 2^994467072169 is an apocalyptic number.

It is an amenable number.

994467072169 is a deficient number, since it is larger than the sum of its proper divisors (26877488475).

994467072169 is a wasteful number, since it uses less digits than its factorization.

994467072169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26877488474.

The product of its (nonzero) digits is 41150592, while the sum is 64.

The spelling of 994467072169 in words is "nine hundred ninety-four billion, four hundred sixty-seven million, seventy-two thousand, one hundred sixty-nine".