947423863 has 2 divisors, whose sum is σ = 947423864. Its totient is φ = 947423862.

The previous prime is 947423837. The next prime is 947423927. The reversal of 947423863 is 368324749.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 947423863 - 2⁵ = 947423831 is a prime.

It is a super-2 number, since 2×947423863² = 1795223952363685538, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (947423563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 473711931 + 473711932.

It is an arithmetic number, because the mean of its divisors is an integer number (473711932).

Almost surely, 2^947423863 is an apocalyptic number.

947423863 is a deficient number, since it is larger than the sum of its proper divisors (1).

947423863 is an equidigital number, since it uses as much as digits as its factorization.

947423863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 870912, while the sum is 46.

The square root of 947423863 is about 30780.2511848100. The cubic root of 947423863 is about 982.1581837919.

The spelling of 947423863 in words is "nine hundred forty-seven million, four hundred twenty-three thousand, eight hundred sixty-three".