8899563456 has 252 divisors, whose sum is σ = 30367952472. Its totient is φ = 2483260416.

The previous prime is 8899563419. The next prime is 8899563457. The reversal of 8899563456 is 6543659988.

It is a tau number, because it is divible by the number of its divisors (252).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a junction number, because it is equal to n+sod(n) for n = 8899563393 and 8899563402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8899563457) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1209966 + ... + 1217298.

Almost surely, 2^8899563456 is an apocalyptic number.

8899563456 is a gapful number since it is divisible by the number (86) 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 8899563456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15183976236).

8899563456 is an abundant number, since it is smaller than the sum of its proper divisors (21468389016).

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

8899563456 is a wasteful number, since it uses less digits than its factorization.

8899563456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7408 (or 7388 counting only the distinct ones).

The product of its digits is 55987200, while the sum is 63.

The square root of 8899563456 is about 94337.4976136213. The cubic root of 8899563456 is about 2072.3172146424.

The spelling of 8899563456 in words is "eight billion, eight hundred ninety-nine million, five hundred sixty-three thousand, four hundred fifty-six".