8987639400 has 288 divisors, whose sum is σ = 31441737600. Its totient is φ = 2297971200.

The previous prime is 8987639393. The next prime is 8987639449. The reversal of 8987639400 is 49367898.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 8716885 + ... + 8717915.

It is an arithmetic number, because the mean of its divisors is an integer number (109172700).

Almost surely, 2^8987639400 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 8987639400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15720868800).

8987639400 is an abundant number, since it is smaller than the sum of its proper divisors (22454098200).

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

8987639400 is a wasteful number, since it uses less digits than its factorization.

8987639400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1249 (or 1237 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The square root of 8987639400 is about 94803.1613396937. The cubic root of 8987639400 is about 2079.1311243991.

The spelling of 8987639400 in words is "eight billion, nine hundred eighty-seven million, six hundred thirty-nine thousand, four hundred".