388944047 has 2 divisors, whose sum is σ = 388944048. Its totient is φ = 388944046.

The previous prime is 388944043. The next prime is 388944067. The reversal of 388944047 is 740449883.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 388944047 - 2² = 388944043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 388943992 and 388944010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (388944043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194472023 + 194472024.

It is an arithmetic number, because the mean of its divisors is an integer number (194472024).

Almost surely, 2^388944047 is an apocalyptic number.

388944047 is a deficient number, since it is larger than the sum of its proper divisors (1).

388944047 is an equidigital number, since it uses as much as digits as its factorization.

388944047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 774144, while the sum is 47.

The square root of 388944047 is about 19721.6644074480. The cubic root of 388944047 is about 729.9543644456.

The spelling of 388944047 in words is "three hundred eighty-eight million, nine hundred forty-four thousand, forty-seven".