947881463 has 4 divisors (see below), whose sum is σ = 947960568. Its totient is φ = 947802360.

The previous prime is 947881447. The next prime is 947881489. The reversal of 947881463 is 364188749.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 364188749 = 71 ⋅5129419.

It is a cyclic number.

It is not a de Polignac number, because 947881463 - 2⁴ = 947881447 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 (947881423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17468 + ... + 46913.

It is an arithmetic number, because the mean of its divisors is an integer number (236990142).

Almost surely, 2^947881463 is an apocalyptic number.

947881463 is a deficient number, since it is larger than the sum of its proper divisors (79105).

947881463 is a wasteful number, since it uses less digits than its factorization.

947881463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79104.

The product of its digits is 1161216, while the sum is 50.

The square root of 947881463 is about 30787.6836251122. The cubic root of 947881463 is about 982.3162838299.

The spelling of 947881463 in words is "nine hundred forty-seven million, eight hundred eighty-one thousand, four hundred sixty-three".