99729894 has 24 divisors (see below), whose sum is σ = 219242520. Its totient is φ = 30220960.

The previous prime is 99729893. The next prime is 99729901. The reversal of 99729894 is 49892799.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99729893) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67959 + ... + 69410.

It is an arithmetic number, because the mean of its divisors is an integer number (9135105).

Almost surely, 2^99729894 is an apocalyptic number.

99729894 is an abundant number, since it is smaller than the sum of its proper divisors (119512626).

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

99729894 is a wasteful number, since it uses less digits than its factorization.

99729894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137396 (or 137385 counting only the distinct ones).

The product of its digits is 2939328, while the sum is 57.

The square root of 99729894 is about 9986.4855680064. The cubic root of 99729894 is about 463.7405995339.

The spelling of 99729894 in words is "ninety-nine million, seven hundred twenty-nine thousand, eight hundred ninety-four".