393146966 has 4 divisors (see below), whose sum is σ = 589720452. Its totient is φ = 196573482.

The previous prime is 393146959. The next prime is 393146969. The reversal of 393146966 is 669641393.

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

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 393146966.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (393146969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98286740 + ... + 98286743.

It is an arithmetic number, because the mean of its divisors is an integer number (147430113).

Almost surely, 2^393146966 is an apocalyptic number.

393146966 is a deficient number, since it is larger than the sum of its proper divisors (196573486).

393146966 is a wasteful number, since it uses less digits than its factorization.

393146966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196573485.

The product of its digits is 629856, while the sum is 47.

The square root of 393146966 is about 19827.9339821374. The cubic root of 393146966 is about 732.5742393509.

The spelling of 393146966 in words is "three hundred ninety-three million, one hundred forty-six thousand, nine hundred sixty-six".