99563838 has 32 divisors (see below), whose sum is σ = 228666240. Its totient is φ = 28582560.

The previous prime is 99563837. The next prime is 99563843. The reversal of 99563838 is 83836599.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99563831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38445 + ... + 40952.

It is an arithmetic number, because the mean of its divisors is an integer number (7145820).

Almost surely, 2^99563838 is an apocalyptic number.

99563838 is an abundant number, since it is smaller than the sum of its proper divisors (129102402).

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

99563838 is a wasteful number, since it uses less digits than its factorization.

99563838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79432.

The product of its digits is 1399680, while the sum is 51.

The square root of 99563838 is about 9978.1680683380. The cubic root of 99563838 is about 463.4830716393.

The spelling of 99563838 in words is "ninety-nine million, five hundred sixty-three thousand, eight hundred thirty-eight".