393872022428 has 12 divisors (see below), whose sum is σ = 689299553880. Its totient is φ = 196929292752.

The previous prime is 393872022421. The next prime is 393872022499. The reversal of 393872022428 is 824220278393.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (393872022421) 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, 1546538 + ... + 1783121.

It is an arithmetic number, because the mean of its divisors is an integer number (57441629490).

Almost surely, 2^393872022428 is an apocalyptic number.

It is an amenable number.

393872022428 is a deficient number, since it is larger than the sum of its proper divisors (295427531452).

393872022428 is a wasteful number, since it uses less digits than its factorization.

393872022428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3359236 (or 3359234 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 50.

The spelling of 393872022428 in words is "three hundred ninety-three billion, eight hundred seventy-two million, twenty-two thousand, four hundred twenty-eight".