99647299440 has 320 divisors, whose sum is σ = 385705313280. Its totient is φ = 23461954560.

The previous prime is 99647299439. The next prime is 99647299441. The reversal of 99647299440 is 4499274699.

It is an interprime number because it is at equal distance from previous prime (99647299439) and next prime (99647299441).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99647299441) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 568695 + ... + 722985.

It is an arithmetic number, because the mean of its divisors is an integer number (1205329104).

Almost surely, 2^99647299440 is an apocalyptic number.

99647299440 is a gapful number since it is divisible by the number (90) 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 99647299440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (192852656640).

99647299440 is an abundant number, since it is smaller than the sum of its proper divisors (286058013840).

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

99647299440 is a wasteful number, since it uses less digits than its factorization.

99647299440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154349 (or 154337 counting only the distinct ones).

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

The spelling of 99647299440 in words is "ninety-nine billion, six hundred forty-seven million, two hundred ninety-nine thousand, four hundred forty".