384564847 has 2 divisors, whose sum is σ = 384564848. Its totient is φ = 384564846.

The previous prime is 384564841. The next prime is 384564931. The reversal of 384564847 is 748465483.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 384564847 - 2³ = 384564839 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 384564847.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (384564841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192282423 + 192282424.

It is an arithmetic number, because the mean of its divisors is an integer number (192282424).

Almost surely, 2^384564847 is an apocalyptic number.

384564847 is a deficient number, since it is larger than the sum of its proper divisors (1).

384564847 is an equidigital number, since it uses as much as digits as its factorization.

384564847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2580480, while the sum is 49.

The square root of 384564847 is about 19610.3250100553. The cubic root of 384564847 is about 727.2044497251.

The spelling of 384564847 in words is "three hundred eighty-four million, five hundred sixty-four thousand, eight hundred forty-seven".