99505940 has 12 divisors (see below), whose sum is σ = 208962516. Its totient is φ = 39802368.

The previous prime is 99505891. The next prime is 99505943. The reversal of 99505940 is 4950599.

It can be written as a sum of positive squares in 2 ways, for example, as 64032004 + 35473936 = 8002^2 + 5956^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99505943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2487629 + ... + 2487668.

It is an arithmetic number, because the mean of its divisors is an integer number (17413543).

Almost surely, 2^99505940 is an apocalyptic number.

It is an amenable number.

99505940 is an abundant number, since it is smaller than the sum of its proper divisors (109456576).

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

99505940 is a wasteful number, since it uses less digits than its factorization.

99505940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4975306 (or 4975304 counting only the distinct ones).

The product of its (nonzero) digits is 72900, while the sum is 41.

The square root of 99505940 is about 9975.2664124824. The cubic root of 99505940 is about 463.3932132238.

The spelling of 99505940 in words is "ninety-nine million, five hundred five thousand, nine hundred forty".