994573220839 has 16 divisors (see below), whose sum is σ = 1099016017920. Its totient is φ = 892474371360.

The previous prime is 994573220831. The next prime is 994573220909. The reversal of 994573220839 is 938022375499.

It is not a de Polignac number, because 994573220839 - 2³ = 994573220831 is a prime.

It is a super-2 number, since 2×994573220839² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (994573220831) 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, 3148882 + ... + 3450304.

It is an arithmetic number, because the mean of its divisors is an integer number (68688501120).

Almost surely, 2^994573220839 is an apocalyptic number.

994573220839 is a deficient number, since it is larger than the sum of its proper divisors (104442797081).

994573220839 is a wasteful number, since it uses less digits than its factorization.

994573220839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305310.

The product of its (nonzero) digits is 29393280, while the sum is 61.

The spelling of 994573220839 in words is "nine hundred ninety-four billion, five hundred seventy-three million, two hundred twenty thousand, eight hundred thirty-nine".