388423265 has 4 divisors (see below), whose sum is σ = 466107924. Its totient is φ = 310738608.

The previous prime is 388423247. The next prime is 388423267. The reversal of 388423265 is 562324883.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 562324883 = 1181 ⋅476143.

It can be written as a sum of positive squares in 2 ways, for example, as 294740224 + 93683041 = 17168^2 + 9679^2 .

It is a cyclic number.

It is not a de Polignac number, because 388423265 - 2²⁸ = 119987809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (388423267) 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, 38842322 + ... + 38842331.

It is an arithmetic number, because the mean of its divisors is an integer number (116526981).

Almost surely, 2^388423265 is an apocalyptic number.

It is an amenable number.

388423265 is a deficient number, since it is larger than the sum of its proper divisors (77684659).

388423265 is an equidigital number, since it uses as much as digits as its factorization.

388423265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77684658.

The product of its digits is 276480, while the sum is 41.

The square root of 388423265 is about 19708.4566874223. The cubic root of 388423265 is about 729.6284247714.

The spelling of 388423265 in words is "three hundred eighty-eight million, four hundred twenty-three thousand, two hundred sixty-five".