9399403966 has 4 divisors (see below), whose sum is σ = 14099105952. Its totient is φ = 4699701982.

The previous prime is 9399403943. The next prime is 9399404017. The reversal of 9399403966 is 6693049939.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6693049939 = 71 ⋅94268309.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 9399403966.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2349850990 + ... + 2349850993.

It is an arithmetic number, because the mean of its divisors is an integer number (3524776488).

Almost surely, 2^9399403966 is an apocalyptic number.

9399403966 is a deficient number, since it is larger than the sum of its proper divisors (4699701986).

9399403966 is a wasteful number, since it uses less digits than its factorization.

9399403966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4699701985.

The product of its (nonzero) digits is 8503056, while the sum is 58.

The square root of 9399403966 is about 96950.5232889436. The cubic root of 9399403966 is about 2110.4096870752.

The spelling of 9399403966 in words is "nine billion, three hundred ninety-nine million, four hundred three thousand, nine hundred sixty-six".