99428851 has 4 divisors (see below), whose sum is σ = 99457704. Its totient is φ = 99400000.

The previous prime is 99428837. The next prime is 99428863. The reversal of 99428851 is 15882499.

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 99428851 - 2⁷ = 99428723 is a prime.

It is a super-2 number, since 2×99428851² = 19772192822360402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99428891) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 8425 + ... + 16426.

It is an arithmetic number, because the mean of its divisors is an integer number (24864426).

Almost surely, 2^99428851 is an apocalyptic number.

99428851 is a deficient number, since it is larger than the sum of its proper divisors (28853).

99428851 is a wasteful number, since it uses less digits than its factorization.

99428851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28852.

The product of its digits is 207360, while the sum is 46.

The square root of 99428851 is about 9971.4016567381. The cubic root of 99428851 is about 463.2735160199.

The spelling of 99428851 in words is "ninety-nine million, four hundred twenty-eight thousand, eight hundred fifty-one".