393030980 has 12 divisors (see below), whose sum is σ = 825365100. Its totient is φ = 157212384.

The previous prime is 393030947. The next prime is 393031019. The reversal of 393030980 is 89030393.

It can be written as a sum of positive squares in 2 ways, for example, as 185613376 + 207417604 = 13624^2 + 14402^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 393030980.

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, 9825755 + ... + 9825794.

It is an arithmetic number, because the mean of its divisors is an integer number (68780425).

Almost surely, 2^393030980 is an apocalyptic number.

It is an amenable number.

393030980 is an abundant number, since it is smaller than the sum of its proper divisors (432334120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

393030980 is a wasteful number, since it uses less digits than its factorization.

393030980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19651558 (or 19651556 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 35.

The square root of 393030980 is about 19825.0089533397. The cubic root of 393030980 is about 732.5021910498.

The spelling of 393030980 in words is "three hundred ninety-three million, thirty thousand, nine hundred eighty".