99834121 has 6 divisors (see below), whose sum is σ = 100378122. Its totient is φ = 99293040.

The previous prime is 99834107. The next prime is 99834131. The reversal of 99834121 is 12143899.

It can be written as a sum of positive squares in only one way, i.e., 51322896 + 48511225 = 7164^2 + 6965^2 .

It is not a de Polignac number, because 99834121 - 2¹⁵ = 99801353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99834131) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38341 + ... + 40861.

It is an arithmetic number, because the mean of its divisors is an integer number (16729687).

Almost surely, 2^99834121 is an apocalyptic number.

It is an amenable number.

99834121 is a deficient number, since it is larger than the sum of its proper divisors (544001).

99834121 is an equidigital number, since it uses as much as digits as its factorization.

99834121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2919 (or 2720 counting only the distinct ones).

The product of its digits is 15552, while the sum is 37.

The square root of 99834121 is about 9991.7026076640. The cubic root of 99834121 is about 463.9020939509.

The spelling of 99834121 in words is "ninety-nine million, eight hundred thirty-four thousand, one hundred twenty-one".