99999801 has 48 divisors (see below), whose sum is σ = 165971520. Its totient is φ = 57456000.

The previous prime is 99999787. The next prime is 99999821. The reversal of 99999801 is 10899999.

It is not a de Polignac number, because 99999801 - 2¹³ = 99991609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (99999821) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 174846 + ... + 175416.

It is an arithmetic number, because the mean of its divisors is an integer number (3457740).

Almost surely, 2^99999801 is an apocalyptic number.

It is an amenable number.

99999801 is a deficient number, since it is larger than the sum of its proper divisors (65971719).

99999801 is a wasteful number, since it uses less digits than its factorization.

99999801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678 (or 675 counting only the distinct ones).

The product of its (nonzero) digits is 472392, while the sum is 54.

The square root of 99999801 is about 9999.9900499950. The cubic root of 99999801 is about 464.1585754690.

The spelling of 99999801 in words is "ninety-nine million, nine hundred ninety-nine thousand, eight hundred one".