393939036 has 36 divisors (see below), whose sum is σ = 1014583752. Its totient is φ = 128834784.

The previous prime is 393939017. The next prime is 393939061. The reversal of 393939036 is 630939393.

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 393938982 and 393939000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 101326 + ... + 105141.

It is an arithmetic number, because the mean of its divisors is an integer number (28182882).

Almost surely, 2^393939036 is an apocalyptic number.

393939036 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

393939036 is an abundant number, since it is smaller than the sum of its proper divisors (620644716).

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

393939036 is a wasteful number, since it uses less digits than its factorization.

393939036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206530 (or 206525 counting only the distinct ones).

The product of its (nonzero) digits is 354294, while the sum is 45.

The square root of 393939036 is about 19847.8975208963. The cubic root of 393939036 is about 733.0658797877.

The spelling of 393939036 in words is "three hundred ninety-three million, nine hundred thirty-nine thousand, thirty-six".