393306479 has 4 divisors (see below), whose sum is σ = 414006840. Its totient is φ = 372606120.

The previous prime is 393306469. The next prime is 393306491. The reversal of 393306479 is 974603393.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 393306479 - 2²⁰ = 392257903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (393306469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10350152 + ... + 10350189.

It is an arithmetic number, because the mean of its divisors is an integer number (103501710).

Almost surely, 2^393306479 is an apocalyptic number.

393306479 is a deficient number, since it is larger than the sum of its proper divisors (20700361).

393306479 is a wasteful number, since it uses less digits than its factorization.

393306479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20700360.

The product of its (nonzero) digits is 367416, while the sum is 44.

The square root of 393306479 is about 19831.9560053969. The cubic root of 393306479 is about 732.6733026565.

The spelling of 393306479 in words is "three hundred ninety-three million, three hundred six thousand, four hundred seventy-nine".