99371819 has 2 divisors, whose sum is σ = 99371820. Its totient is φ = 99371818.

The previous prime is 99371807. The next prime is 99371887. The reversal of 99371819 is 91817399.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (91817399) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99371819 - 2⁴ = 99371803 is a prime.

It is a super-2 number, since 2×99371819² = 19749516822737522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (99371219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49685909 + 49685910.

It is an arithmetic number, because the mean of its divisors is an integer number (49685910).

Almost surely, 2^99371819 is an apocalyptic number.

99371819 is a deficient number, since it is larger than the sum of its proper divisors (1).

99371819 is an equidigital number, since it uses as much as digits as its factorization.

99371819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 122472, while the sum is 47.

The square root of 99371819 is about 9968.5414680383. The cubic root of 99371819 is about 463.1849217865.

The spelling of 99371819 in words is "ninety-nine million, three hundred seventy-one thousand, eight hundred nineteen".