99938474888 has 60 divisors (see below), whose sum is σ = 218698284645. Its totient is φ = 42811997760.

The previous prime is 99938474887. The next prime is 99938474893. The reversal of 99938474888 is 88847483999.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 98898928324 + 1039546564 = 314482^2 + 32242^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=223538.

It is a super-2 number, since 2×99938474888² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99938474887) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 43812308 + ... + 43814588.

Almost surely, 2^99938474888 is an apocalyptic number.

99938474888 is a gapful number since it is divisible by the number (98) 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 99938474888

99938474888 is an abundant number, since it is smaller than the sum of its proper divisors (118759809757).

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

99938474888 is an frugal number, since it uses more digits than its factorization.

99938474888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4596 (or 2290 counting only the distinct ones).

The product of its digits is 1003290624, while the sum is 77.

The spelling of 99938474888 in words is "ninety-nine billion, nine hundred thirty-eight million, four hundred seventy-four thousand, eight hundred eighty-eight".