99899994 has 16 divisors (see below), whose sum is σ = 208487232. Its totient is φ = 31852128.

The previous prime is 99899981. The next prime is 99899999. The reversal of 99899994 is 49999899.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (99899999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 361819 + ... + 362094.

It is an arithmetic number, because the mean of its divisors is an integer number (13030452).

Almost surely, 2^99899994 is an apocalyptic number.

99899994 is an abundant number, since it is smaller than the sum of its proper divisors (108587238).

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

99899994 is a wasteful number, since it uses less digits than its factorization.

99899994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723941.

The product of its digits is 17006112, while the sum is 66.

The square root of 99899994 is about 9994.9984492245. The cubic root of 99899994 is about 464.0041028422.

The spelling of 99899994 in words is "ninety-nine million, eight hundred ninety-nine thousand, nine hundred ninety-four".