393342885 has 64 divisors (see below), whose sum is σ = 762639360. Its totient is φ = 193575744.

The previous prime is 393342881. The next prime is 393342899. The reversal of 393342885 is 588243393.

393342885 is a `hidden beast` number, since 39 + 334 + 288 + 5 = 666.

It is not a de Polignac number, because 393342885 - 2² = 393342881 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 393342885.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (393342881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 140772 + ... + 143538.

It is an arithmetic number, because the mean of its divisors is an integer number (11916240).

Almost surely, 2^393342885 is an apocalyptic number.

It is an amenable number.

393342885 is a deficient number, since it is larger than the sum of its proper divisors (369296475).

393342885 is an equidigital number, since it uses as much as digits as its factorization.

393342885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2806 (or 2788 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The square root of 393342885 is about 19832.8738462181. The cubic root of 393342885 is about 732.6959083366.

The spelling of 393342885 in words is "three hundred ninety-three million, three hundred forty-two thousand, eight hundred eighty-five".