388870523 has 2 divisors, whose sum is σ = 388870524. Its totient is φ = 388870522.

The previous prime is 388870513. The next prime is 388870553. The reversal of 388870523 is 325078883.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 388870523 - 2⁴ = 388870507 is a prime.

It is not a weakly prime, because it can be changed into another prime (388870513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194435261 + 194435262.

It is an arithmetic number, because the mean of its divisors is an integer number (194435262).

Almost surely, 2^388870523 is an apocalyptic number.

388870523 is a deficient number, since it is larger than the sum of its proper divisors (1).

388870523 is an equidigital number, since it uses as much as digits as its factorization.

388870523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 322560, while the sum is 44.

The square root of 388870523 is about 19719.8002778933. The cubic root of 388870523 is about 729.9083659297.

The spelling of 388870523 in words is "three hundred eighty-eight million, eight hundred seventy thousand, five hundred twenty-three".