947940803 has 4 divisors (see below), whose sum is σ = 949871928. Its totient is φ = 946009680.

The previous prime is 947940779. The next prime is 947940811. The reversal of 947940803 is 308049749.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 308049749 = 7 ⋅44007107.

It is a cyclic number.

It is not a de Polignac number, because 947940803 - 2²⁸ = 679505347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (947940823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 964826 + ... + 965807.

It is an arithmetic number, because the mean of its divisors is an integer number (237467982).

Almost surely, 2^947940803 is an apocalyptic number.

947940803 is a deficient number, since it is larger than the sum of its proper divisors (1931125).

947940803 is a wasteful number, since it uses less digits than its factorization.

947940803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1931124.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 947940803 is about 30788.6473070838. The cubic root of 947940803 is about 982.3367819738.

The spelling of 947940803 in words is "nine hundred forty-seven million, nine hundred forty thousand, eight hundred three".