393812426 has 8 divisors (see below), whose sum is σ = 675107040. Its totient is φ = 168776748.

The previous prime is 393812407. The next prime is 393812453. The reversal of 393812426 is 624218393.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 393812426.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14064716 + ... + 14064743.

It is an arithmetic number, because the mean of its divisors is an integer number (84388380).

Almost surely, 2^393812426 is an apocalyptic number.

393812426 is a deficient number, since it is larger than the sum of its proper divisors (281294614).

393812426 is a wasteful number, since it uses less digits than its factorization.

393812426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28129468.

The product of its digits is 62208, while the sum is 38.

The square root of 393812426 is about 19844.7077579893. The cubic root of 393812426 is about 732.9873368258.

The spelling of 393812426 in words is "three hundred ninety-three million, eight hundred twelve thousand, four hundred twenty-six".