388702840449 has 48 divisors (see below), whose sum is σ = 656177414144. Its totient is φ = 200333437920.

The previous prime is 388702840429. The next prime is 388702840451. The reversal of 388702840449 is 944048207883.

It is a happy number.

It is not a de Polignac number, because 388702840449 - 2⁵ = 388702840417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (388702840429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 279547 + ... + 924960.

Almost surely, 2^388702840449 is an apocalyptic number.

It is an amenable number.

388702840449 is a deficient number, since it is larger than the sum of its proper divisors (267474573695).

388702840449 is a wasteful number, since it uses less digits than its factorization.

388702840449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1204666 (or 1204655 counting only the distinct ones).

The product of its (nonzero) digits is 12386304, while the sum is 57.

The spelling of 388702840449 in words is "three hundred eighty-eight billion, seven hundred two million, eight hundred forty thousand, four hundred forty-nine".