388324939469 has 2 divisors, whose sum is σ = 388324939470. Its totient is φ = 388324939468.

The previous prime is 388324939447. The next prime is 388324939493. The reversal of 388324939469 is 964939423883.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 337953870244 + 50371069225 = 581338^2 + 224435^2 .

It is a cyclic number.

It is not a de Polignac number, because 388324939469 - 2²⁰ = 388323890893 is a prime.

It is a super-2 number, since 2×388324939469² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 388324939399 and 388324939408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (388324939169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194162469734 + 194162469735.

It is an arithmetic number, because the mean of its divisors is an integer number (194162469735).

Almost surely, 2^388324939469 is an apocalyptic number.

It is an amenable number.

388324939469 is a deficient number, since it is larger than the sum of its proper divisors (1).

388324939469 is an equidigital number, since it uses as much as digits as its factorization.

388324939469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 241864704, while the sum is 68.

The spelling of 388324939469 in words is "three hundred eighty-eight billion, three hundred twenty-four million, nine hundred thirty-nine thousand, four hundred sixty-nine".