99870319 has 2 divisors, whose sum is σ = 99870320. Its totient is φ = 99870318.

The previous prime is 99870307. The next prime is 99870341. The reversal of 99870319 is 91307899.

It is a weak prime.

It is an emirp because it is prime and its reverse (91307899) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99870319 - 2¹³ = 99862127 is a prime.

It is a super-2 number, since 2×99870319² = 19948161234323522, 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 (99870349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49935159 + 49935160.

It is an arithmetic number, because the mean of its divisors is an integer number (49935160).

Almost surely, 2^99870319 is an apocalyptic number.

99870319 is a deficient number, since it is larger than the sum of its proper divisors (1).

99870319 is an equidigital number, since it uses as much as digits as its factorization.

99870319 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 122472, while the sum is 46.

The square root of 99870319 is about 9993.5138464906. The cubic root of 99870319 is about 463.9581546067.

It can be divided in two parts, 998 and 70319, that added together give a palindrome (71317).

The spelling of 99870319 in words is "ninety-nine million, eight hundred seventy thousand, three hundred nineteen".