388949499904 has 84 divisors (see below), whose sum is σ = 904848621084. Its totient is φ = 166692470784.

The previous prime is 388949499859. The next prime is 388949499907. The reversal of 388949499904 is 409994949883.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388949499907) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 83074 + ... + 885889.

Almost surely, 2^388949499904 is an apocalyptic number.

It is an amenable number.

388949499904 is an abundant number, since it is smaller than the sum of its proper divisors (515899121180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

388949499904 is an frugal number, since it uses more digits than its factorization.

388949499904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 969003 (or 968972 counting only the distinct ones).

The product of its (nonzero) digits is 725594112, while the sum is 76.

The spelling of 388949499904 in words is "three hundred eighty-eight billion, nine hundred forty-nine million, four hundred ninety-nine thousand, nine hundred four".