99897345 has 48 divisors (see below), whose sum is σ = 188198400.
Its totient is φ = 48833280.
The previous prime is 99897341. The next prime is 99897353. The reversal of 99897345 is 54379899.
It is a Cunningham number, because it is equal to 4643+1.
It is not a de Polignac number, because 99897345 - 22 = 99897341 is a prime.
It is a Curzon number.
It is a junction number, because it is equal to n+sod(n) for n = 99897291 and 99897300.
It is not an unprimeable number, because it can be changed into a prime (99897341) by changing a digit.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 24621 + ... + 28389.
It is an arithmetic number, because the mean of its divisors is an integer number (3920800).
Almost surely, 299897345 is an apocalyptic number.
99897345 is a gapful number since it is divisible by the number (95) formed by its first and last digit.
It is an amenable number.
99897345 is a deficient number, since it is larger than the sum of its proper divisors (88301055).
99897345 is a wasteful number, since it uses less digits than its factorization.
99897345 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3830 (or 3827 counting only the distinct ones).
The product of its digits is 2449440, while the sum is 54.
The square root of 99897345 is about 9994.8659320673.
The cubic root of 99897345 is about 464.0000015483.
Note that the first 5 decimals are identical.
The spelling of 99897345 in words is "ninety-nine million, eight hundred ninety-seven thousand, three hundred forty-five".