947881243 has 4 divisors (see below), whose sum is σ = 949218880. Its totient is φ = 946543608.

The previous prime is 947881241. The next prime is 947881301. The reversal of 947881243 is 342188749.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 342188749 = 7 ⋅48884107.

It is a cyclic number.

It is not a de Polignac number, because 947881243 - 2¹ = 947881241 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 947881193 and 947881202.

It is not an unprimeable number, because it can be changed into a prime (947881241) 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, 667755 + ... + 669172.

It is an arithmetic number, because the mean of its divisors is an integer number (237304720).

Almost surely, 2^947881243 is an apocalyptic number.

947881243 is a deficient number, since it is larger than the sum of its proper divisors (1337637).

947881243 is a wasteful number, since it uses less digits than its factorization.

947881243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1337636.

The product of its digits is 387072, while the sum is 46.

The square root of 947881243 is about 30787.6800522547. The cubic root of 947881243 is about 982.3162078325.

The spelling of 947881243 in words is "nine hundred forty-seven million, eight hundred eighty-one thousand, two hundred forty-three".