99870833 has 2 divisors, whose sum is σ = 99870834. Its totient is φ = 99870832.

The previous prime is 99870787. The next prime is 99870857. The reversal of 99870833 is 33807899.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85063729 + 14807104 = 9223^2 + 3848^2 .

It is a cyclic number.

It is not a de Polignac number, because 99870833 - 2¹⁸ = 99608689 is a prime.

It is a super-2 number, since 2×99870833² = 19948366568227778, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (99878833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49935416 + 49935417.

It is an arithmetic number, because the mean of its divisors is an integer number (49935417).

Almost surely, 2^99870833 is an apocalyptic number.

It is an amenable number.

99870833 is a deficient number, since it is larger than the sum of its proper divisors (1).

99870833 is an equidigital number, since it uses as much as digits as its factorization.

99870833 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 99870833 is about 9993.5395631378. The cubic root of 99870833 is about 463.9589505525.

The spelling of 99870833 in words is "ninety-nine million, eight hundred seventy thousand, eight hundred thirty-three".