388850755 has 4 divisors (see below), whose sum is σ = 466620912. Its totient is φ = 311080600.

The previous prime is 388850753. The next prime is 388850801. The reversal of 388850755 is 557058883.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 557058883 = 29 ⋅19208927.

It is not a de Polignac number, because 388850755 - 2¹ = 388850753 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 388850699 and 388850708.

It is not an unprimeable number, because it can be changed into a prime (388850753) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38885071 + ... + 38885080.

It is an arithmetic number, because the mean of its divisors is an integer number (116655228).

Almost surely, 2^388850755 is an apocalyptic number.

388850755 is a deficient number, since it is larger than the sum of its proper divisors (77770157).

388850755 is an equidigital number, since it uses as much as digits as its factorization.

388850755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77770156.

The product of its (nonzero) digits is 1344000, while the sum is 49.

The square root of 388850755 is about 19719.2990494084. The cubic root of 388850755 is about 729.8959975686.

The spelling of 388850755 in words is "three hundred eighty-eight million, eight hundred fifty thousand, seven hundred fifty-five".