99894919 has 2 divisors, whose sum is σ = 99894920. Its totient is φ = 99894918.

The previous prime is 99894869. The next prime is 99894929. The reversal of 99894919 is 91949899.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99894919 - 2¹⁹ = 99370631 is a prime.

It is a super-3 number, since 3×99894919³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99894929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49947459 + 49947460.

It is an arithmetic number, because the mean of its divisors is an integer number (49947460).

Almost surely, 2^99894919 is an apocalyptic number.

99894919 is a deficient number, since it is larger than the sum of its proper divisors (1).

99894919 is an equidigital number, since it uses as much as digits as its factorization.

99894919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1889568, while the sum is 58.

The square root of 99894919 is about 9994.7445690223. The cubic root of 99894919 is about 463.9962454487.

The spelling of 99894919 in words is "ninety-nine million, eight hundred ninety-four thousand, nine hundred nineteen".