87339389940 has 576 divisors, whose sum is σ = 315640281600. Its totient is φ = 19994388480.

The previous prime is 87339389933. The next prime is 87339389983. The reversal of 87339389940 is 4998393378.

87339389940 is a `hidden beast` number, since 87 + 3 + 393 + 89 + 94 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 133750654 + ... + 133751306.

It is an arithmetic number, because the mean of its divisors is an integer number (547986600).

Almost surely, 2^87339389940 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87339389940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157820140800).

87339389940 is an abundant number, since it is smaller than the sum of its proper divisors (228300891660).

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

87339389940 is a wasteful number, since it uses less digits than its factorization.

87339389940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 805 (or 786 counting only the distinct ones).

The product of its (nonzero) digits is 35271936, while the sum is 63.

The spelling of 87339389940 in words is "eighty-seven billion, three hundred thirty-nine million, three hundred eighty-nine thousand, nine hundred forty".