38439398880 has 240 divisors, whose sum is σ = 137885799744. Its totient is φ = 10082257920.

The previous prime is 38439398869. The next prime is 38439398909. The reversal of 38439398880 is 8889393483.

38439398880 is a `hidden beast` number, since 3 + 84 + 393 + 98 + 8 + 80 = 666.

38439398880 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (240).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 766249 + ... + 814871.

Almost surely, 2^38439398880 is an apocalyptic number.

38439398880 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38439398880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68942899872).

38439398880 is an abundant number, since it is smaller than the sum of its proper divisors (99446400864).

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

38439398880 is a wasteful number, since it uses less digits than its factorization.

38439398880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48711 (or 48694 counting only the distinct ones).

The product of its (nonzero) digits is 35831808, while the sum is 63.

The spelling of 38439398880 in words is "thirty-eight billion, four hundred thirty-nine million, three hundred ninety-eight thousand, eight hundred eighty".