99559840 has 24 divisors (see below), whose sum is σ = 235210500. Its totient is φ = 39823872.

The previous prime is 99559819. The next prime is 99559843. The reversal of 99559840 is 4895599.

It can be written as a sum of positive squares in 2 ways, for example, as 90098064 + 9461776 = 9492^2 + 3076^2 .

It is not an unprimeable number, because it can be changed into a prime (99559843) 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, 310965 + ... + 311284.

Almost surely, 2^99559840 is an apocalyptic number.

It is an amenable number.

99559840 is an abundant number, since it is smaller than the sum of its proper divisors (135650660).

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

99559840 is a wasteful number, since it uses less digits than its factorization.

99559840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622264 (or 622256 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 49.

The square root of 99559840 is about 9977.9677289516. The cubic root of 99559840 is about 463.4768678135.

The spelling of 99559840 in words is "ninety-nine million, five hundred fifty-nine thousand, eight hundred forty".