388277047 has 2 divisors, whose sum is σ = 388277048. Its totient is φ = 388277046.

The previous prime is 388277041. The next prime is 388277051. The reversal of 388277047 is 740772883.

It is a strong prime.

It is an emirp because it is prime and its reverse (740772883) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 388277047 - 2¹⁹ = 387752759 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 388276988 and 388277006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (388277041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194138523 + 194138524.

It is an arithmetic number, because the mean of its divisors is an integer number (194138524).

Almost surely, 2^388277047 is an apocalyptic number.

388277047 is a deficient number, since it is larger than the sum of its proper divisors (1).

388277047 is an equidigital number, since it uses as much as digits as its factorization.

388277047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 526848, while the sum is 46.

The square root of 388277047 is about 19704.7468139025. The cubic root of 388277047 is about 729.5368595398.

The spelling of 388277047 in words is "three hundred eighty-eight million, two hundred seventy-seven thousand, forty-seven".