393393336 has 64 divisors (see below), whose sum is σ = 1125550080. Its totient is φ = 112241280.

The previous prime is 393393313. The next prime is 393393353. The reversal of 393393336 is 633393393.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 177145 + ... + 179351.

It is an arithmetic number, because the mean of its divisors is an integer number (17586720).

Almost surely, 2^393393336 is an apocalyptic number.

It is an amenable number.

393393336 is an abundant number, since it is smaller than the sum of its proper divisors (732156744).

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

393393336 is a wasteful number, since it uses less digits than its factorization.

393393336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3284 (or 3280 counting only the distinct ones).

The product of its digits is 354294, while the sum is 42.

The square root of 393393336 is about 19834.1457088527. The cubic root of 393393336 is about 732.7272327123.

The spelling of 393393336 in words is "three hundred ninety-three million, three hundred ninety-three thousand, three hundred thirty-six".