99869816 has 8 divisors (see below), whose sum is σ = 187255920. Its totient is φ = 49934904.

The previous prime is 99869813. The next prime is 99869821. The reversal of 99869816 is 61896899.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99869813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6241856 + ... + 6241871.

It is an arithmetic number, because the mean of its divisors is an integer number (23406990).

Almost surely, 2^99869816 is an apocalyptic number.

It is an amenable number.

99869816 is a deficient number, since it is larger than the sum of its proper divisors (87386104).

99869816 is a wasteful number, since it uses less digits than its factorization.

99869816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12483733 (or 12483729 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 56.

The square root of 99869816 is about 9993.4886801357. The cubic root of 99869816 is about 463.9573756921.

The spelling of 99869816 in words is "ninety-nine million, eight hundred sixty-nine thousand, eight hundred sixteen".