388484839 has 4 divisors (see below), whose sum is σ = 401016640. Its totient is φ = 375953040.

The previous prime is 388484819. The next prime is 388484843. The reversal of 388484839 is 938484883.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 388484839 - 2⁷ = 388484711 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 388484839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388484819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6265854 + ... + 6265915.

It is an arithmetic number, because the mean of its divisors is an integer number (100254160).

Almost surely, 2^388484839 is an apocalyptic number.

388484839 is a deficient number, since it is larger than the sum of its proper divisors (12531801).

388484839 is a wasteful number, since it uses less digits than its factorization.

388484839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12531800.

The product of its digits is 5308416, while the sum is 55.

The square root of 388484839 is about 19710.0187468201. The cubic root of 388484839 is about 729.6669770166. Note that the first 3 decimals are identical.

The spelling of 388484839 in words is "three hundred eighty-eight million, four hundred eighty-four thousand, eight hundred thirty-nine".