99860047 has 12 divisors (see below), whose sum is σ = 115486576. Its totient is φ = 84585600.

The previous prime is 99860041. The next prime is 99860107. The reversal of 99860047 is 74006899.

It is not a de Polignac number, because 99860047 - 2¹⁵ = 99827279 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 99859985 and 99860012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99860041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54547 + ... + 56347.

Almost surely, 2^99860047 is an apocalyptic number.

99860047 is a deficient number, since it is larger than the sum of its proper divisors (15626529).

99860047 is an equidigital number, since it uses as much as digits as its factorization.

99860047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1986 (or 1897 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 99860047 is about 9992.9998999300. Note that the first 3 decimals coincide. The cubic root of 99860047 is about 463.9422475064.

The spelling of 99860047 in words is "ninety-nine million, eight hundred sixty thousand, forty-seven".