393910122 has 16 divisors (see below), whose sum is σ = 789112800. Its totient is φ = 131087952.

The previous prime is 393910093. The next prime is 393910129. The reversal of 393910122 is 221019393.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 393910122.

It is not an unprimeable number, because it can be changed into a prime (393910129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49872 + ... + 57227.

It is an arithmetic number, because the mean of its divisors is an integer number (49319550).

Almost surely, 2^393910122 is an apocalyptic number.

393910122 is an abundant number, since it is smaller than the sum of its proper divisors (395202678).

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

393910122 is a wasteful number, since it uses less digits than its factorization.

393910122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107717.

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 393910122 is about 19847.1691180380. The cubic root of 393910122 is about 733.0479443683.

The spelling of 393910122 in words is "three hundred ninety-three million, nine hundred ten thousand, one hundred twenty-two".