99240217 has 4 divisors (see below), whose sum is σ = 99281700. Its totient is φ = 99198736.

The previous prime is 99240181. The next prime is 99240227. The reversal of 99240217 is 71204299.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 71204299 = 563 ⋅126473.

It can be written as a sum of positive squares in 2 ways, for example, as 37711881 + 61528336 = 6141^2 + 7844^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99240217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99240227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16918 + ... + 22015.

It is an arithmetic number, because the mean of its divisors is an integer number (24820425).

Almost surely, 2^99240217 is an apocalyptic number.

It is an amenable number.

99240217 is a deficient number, since it is larger than the sum of its proper divisors (41483).

99240217 is a wasteful number, since it uses less digits than its factorization.

99240217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41482.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 99240217 is about 9961.9384157904. The cubic root of 99240217 is about 462.9803601333.

It can be divided in two parts, 992 and 40217, that added together give a square (41209 = 203²).

The spelling of 99240217 in words is "ninety-nine million, two hundred forty thousand, two hundred seventeen".