99845519 has 2 divisors, whose sum is σ = 99845520. Its totient is φ = 99845518.

The previous prime is 99845509. The next prime is 99845549. The reversal of 99845519 is 91554899.

It is a weak prime.

It is an emirp because it is prime and its reverse (91554899) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99845519 - 2⁴ = 99845503 is a prime.

It is a super-2 number, since 2×99845519² = 19938255328758722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99845509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49922759 + 49922760.

It is an arithmetic number, because the mean of its divisors is an integer number (49922760).

Almost surely, 2^99845519 is an apocalyptic number.

99845519 is a deficient number, since it is larger than the sum of its proper divisors (1).

99845519 is an equidigital number, since it uses as much as digits as its factorization.

99845519 is an evil number, because the sum of its binary digits is even.

The product of its digits is 583200, while the sum is 50.

The square root of 99845519 is about 9992.2729646462. The cubic root of 99845519 is about 463.9197477511.

The spelling of 99845519 in words is "ninety-nine million, eight hundred forty-five thousand, five hundred nineteen".