99940064 has 48 divisors (see below), whose sum is σ = 225566208. Its totient is φ = 42698112.

The previous prime is 99940013. The next prime is 99940067. The reversal of 99940064 is 46004999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99940067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112229 + ... + 113115.

It is an arithmetic number, because the mean of its divisors is an integer number (4699296).

Almost surely, 2^99940064 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 99940064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112783104).

99940064 is an abundant number, since it is smaller than the sum of its proper divisors (125626144).

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

99940064 is a wasteful number, since it uses less digits than its factorization.

99940064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1407 (or 1399 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 41.

The square root of 99940064 is about 9997.0027508249. The cubic root of 99940064 is about 464.0661320722.

The spelling of 99940064 in words is "ninety-nine million, nine hundred forty thousand, sixty-four".