99009851 has 4 divisors (see below), whose sum is σ = 99479304. Its totient is φ = 98540400.

The previous prime is 99009829. The next prime is 99009881. The reversal of 99009851 is 15890099.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 99009851 - 2²² = 94815547 is a prime.

It is a super-3 number, since 3×99009851³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 99009799 and 99009808.

It is not an unprimeable number, because it can be changed into a prime (99009811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 234410 + ... + 234831.

It is an arithmetic number, because the mean of its divisors is an integer number (24869826).

Almost surely, 2^99009851 is an apocalyptic number.

99009851 is a deficient number, since it is larger than the sum of its proper divisors (469453).

99009851 is a wasteful number, since it uses less digits than its factorization.

99009851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469452.

The product of its (nonzero) digits is 29160, while the sum is 41.

The square root of 99009851 is about 9950.3693901282. The cubic root of 99009851 is about 462.6218443038.

The spelling of 99009851 in words is "ninety-nine million, nine thousand, eight hundred fifty-one".