99951853 has 4 divisors (see below), whose sum is σ = 99972288.
Its totient is φ = 99931420.
The previous prime is 99951851. The next prime is 99951877. The reversal of 99951853 is 35815999.
It is a happy number.
It is the 4082-nd star number.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35815999 = 2549 ⋅14051.
It is a cyclic number.
It is not a de Polignac number, because 99951853 - 21 = 99951851 is a prime.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 99951797 and 99951806.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (99951851) 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, 1950 + ... + 14272.
It is an arithmetic number, because the mean of its divisors is an integer number (24993072).
Almost surely, 299951853 is an apocalyptic number.
It is an amenable number.
99951853 is a deficient number, since it is larger than the sum of its proper divisors (20435).
99951853 is a wasteful number, since it uses less digits than its factorization.
99951853 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 20434.
The product of its digits is 437400, while the sum is 49.
The square root of 99951853 is about 9997.5923601635.
The cubic root of 99951853 is about 464.0843785435.
The spelling of 99951853 in words is "ninety-nine million, nine hundred fifty-one thousand, eight hundred fifty-three".