9439800919828 has 12 divisors (see below), whose sum is σ = 16615140926580. Its totient is φ = 4692617797952.

The previous prime is 9439800919817. The next prime is 9439800919831. The reversal of 9439800919828 is 8289190089349.

It can be written as a sum of positive squares in 2 ways, for example, as 9059245180164 + 380555739664 = 3009858^2 + 616892^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6820664713 + ... + 6820666096.

It is an arithmetic number, because the mean of its divisors is an integer number (1384595077215).

Almost surely, 2^{9439800919828} is an apocalyptic number.

It is an amenable number.

9439800919828 is a deficient number, since it is larger than the sum of its proper divisors (7175340006752).

9439800919828 is a wasteful number, since it uses less digits than its factorization.

9439800919828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13641330986 (or 13641330984 counting only the distinct ones).

The product of its (nonzero) digits is 80621568, while the sum is 70.

The spelling of 9439800919828 in words is "nine trillion, four hundred thirty-nine billion, eight hundred million, nine hundred nineteen thousand, eight hundred twenty-eight".