388532623397 has 4 divisors (see below), whose sum is σ = 388913165676. Its totient is φ = 388152081120.

The previous prime is 388532623321. The next prime is 388532623399. The reversal of 388532623397 is 793326235883.

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

It can be written as a sum of positive squares in 2 ways, for example, as 250506256036 + 138026367361 = 500506^2 + 371519^2 .

It is a cyclic number.

It is not a de Polignac number, because 388532623397 - 2¹⁸ = 388532361253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388532623399) 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, 190269608 + ... + 190271649.

It is an arithmetic number, because the mean of its divisors is an integer number (97228291419).

Almost surely, 2^388532623397 is an apocalyptic number.

It is an amenable number.

388532623397 is a deficient number, since it is larger than the sum of its proper divisors (380542279).

388532623397 is a wasteful number, since it uses less digits than its factorization.

388532623397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380542278.

The product of its digits is 39191040, while the sum is 59.

The spelling of 388532623397 in words is "three hundred eighty-eight billion, five hundred thirty-two million, six hundred twenty-three thousand, three hundred ninety-seven".