99214817 has 4 divisors (see below), whose sum is σ = 106846740. Its totient is φ = 91582896.

The previous prime is 99214807. The next prime is 99214831. The reversal of 99214817 is 71841299.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 71841299 = 19 ⋅3781121.

It can be written as a sum of positive squares in 2 ways, for example, as 60824401 + 38390416 = 7799^2 + 6196^2 .

It is a cyclic number.

It is not a de Polignac number, because 99214817 - 2¹⁴ = 99198433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (99214807) 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, 3815942 + ... + 3815967.

It is an arithmetic number, because the mean of its divisors is an integer number (26711685).

Almost surely, 2^99214817 is an apocalyptic number.

It is an amenable number.

99214817 is a deficient number, since it is larger than the sum of its proper divisors (7631923).

99214817 is a wasteful number, since it uses less digits than its factorization.

99214817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7631922.

The product of its digits is 36288, while the sum is 41.

The square root of 99214817 is about 9960.6634819173. The cubic root of 99214817 is about 462.9408576516.

The spelling of 99214817 in words is "ninety-nine million, two hundred fourteen thousand, eight hundred seventeen".