99969894 has 48 divisors (see below), whose sum is σ = 230211072. Its totient is φ = 31244544.

The previous prime is 99969853. The next prime is 99969941. The reversal of 99969894 is 49896999.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 116772 + ... + 117624.

It is an arithmetic number, because the mean of its divisors is an integer number (4796064).

Almost surely, 2^99969894 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99969894, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115105536).

99969894 is an abundant number, since it is smaller than the sum of its proper divisors (130241178).

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

99969894 is a wasteful number, since it uses less digits than its factorization.

99969894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1261 (or 1258 counting only the distinct ones).

The product of its digits is 11337408, while the sum is 63.

The square root of 99969894 is about 9998.4945866865. The cubic root of 99969894 is about 464.1122987949.

The spelling of 99969894 in words is "ninety-nine million, nine hundred sixty-nine thousand, eight hundred ninety-four".