99955847 has 4 divisors (see below), whose sum is σ = 100089696. Its totient is φ = 99822000.

The previous prime is 99955829. The next prime is 99955879. The reversal of 99955847 is 74855999.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74855999 = 3049 ⋅24551.

It is a cyclic number.

It is not a de Polignac number, because 99955847 - 2⁶ = 99955783 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 99955792 and 99955801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99955897) 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, 65798 + ... + 67299.

It is an arithmetic number, because the mean of its divisors is an integer number (25022424).

Almost surely, 2^99955847 is an apocalyptic number.

99955847 is a deficient number, since it is larger than the sum of its proper divisors (133849).

99955847 is a wasteful number, since it uses less digits than its factorization.

99955847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133848.

The product of its digits is 4082400, while the sum is 56.

The square root of 99955847 is about 9997.7921062603. The cubic root of 99955847 is about 464.0905599474.

The spelling of 99955847 in words is "ninety-nine million, nine hundred fifty-five thousand, eight hundred forty-seven".