388452440389 has 8 divisors (see below), whose sum is σ = 418338531072. Its totient is φ = 358567083120.

The previous prime is 388452440317. The next prime is 388452440423. The reversal of 388452440389 is 983044254883.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 388452440389 - 2¹³ = 388452432197 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 (388452410389) 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 7 ways as a sum of consecutive naturals, for example, 1466772 + ... + 1711234.

It is an arithmetic number, because the mean of its divisors is an integer number (52292316384).

Almost surely, 2^388452440389 is an apocalyptic number.

It is an amenable number.

388452440389 is a deficient number, since it is larger than the sum of its proper divisors (29886090683).

388452440389 is a wasteful number, since it uses less digits than its factorization.

388452440389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366707.

The product of its (nonzero) digits is 26542080, while the sum is 58.

The spelling of 388452440389 in words is "three hundred eighty-eight billion, four hundred fifty-two million, four hundred forty thousand, three hundred eighty-nine".