947380319 has 2 divisors, whose sum is σ = 947380320. Its totient is φ = 947380318.

The previous prime is 947380283. The next prime is 947380321. The reversal of 947380319 is 913083749.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (913083749) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 947380319 - 2¹² = 947376223 is a prime.

It is a super-2 number, since 2×947380319² = 1795058937657083522, which contains 22 as substring.

Together with 947380321, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 947380319.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (947380019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 473690159 + 473690160.

It is an arithmetic number, because the mean of its divisors is an integer number (473690160).

Almost surely, 2^947380319 is an apocalyptic number.

947380319 is a deficient number, since it is larger than the sum of its proper divisors (1).

947380319 is an equidigital number, since it uses as much as digits as its factorization.

947380319 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 947380319 is about 30779.5438400247. The cubic root of 947380319 is about 982.1431367601.

The spelling of 947380319 in words is "nine hundred forty-seven million, three hundred eighty thousand, three hundred nineteen".