99831419 has 2 divisors, whose sum is σ = 99831420. Its totient is φ = 99831418.

The previous prime is 99831397. The next prime is 99831421. The reversal of 99831419 is 91413899.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99831419 - 2⁸ = 99831163 is a prime.

It is a super-2 number, since 2×99831419² = 19932624439107122, which contains 22 as substring.

Together with 99831421, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 99831419.

It is not a weakly prime, because it can be changed into another prime (99831449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49915709 + 49915710.

It is an arithmetic number, because the mean of its divisors is an integer number (49915710).

Almost surely, 2^99831419 is an apocalyptic number.

99831419 is a deficient number, since it is larger than the sum of its proper divisors (1).

99831419 is an equidigital number, since it uses as much as digits as its factorization.

99831419 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69984, while the sum is 44.

The square root of 99831419 is about 9991.5673945583. The cubic root of 99831419 is about 463.8979087594.

The spelling of 99831419 in words is "ninety-nine million, eight hundred thirty-one thousand, four hundred nineteen".