99965219 has 4 divisors (see below), whose sum is σ = 105845544. Its totient is φ = 94084896.

The previous prime is 99965209. The next prime is 99965221. The reversal of 99965219 is 91256999.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91256999 = 661 ⋅138059.

It is a cyclic number.

It is not a de Polignac number, because 99965219 - 2²⁴ = 83188003 is a prime.

It is a super-2 number, since 2×99965219² = 19986090019435922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99965209) 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, 2940137 + ... + 2940170.

It is an arithmetic number, because the mean of its divisors is an integer number (26461386).

Almost surely, 2^99965219 is an apocalyptic number.

99965219 is a deficient number, since it is larger than the sum of its proper divisors (5880325).

99965219 is a wasteful number, since it uses less digits than its factorization.

99965219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5880324.

The product of its digits is 393660, while the sum is 50.

The square root of 99965219 is about 9998.2607987590. The cubic root of 99965219 is about 464.1050640874.

The spelling of 99965219 in words is "ninety-nine million, nine hundred sixty-five thousand, two hundred nineteen".