99789241 has 2 divisors, whose sum is σ = 99789242. Its totient is φ = 99789240.

The previous prime is 99789233. The next prime is 99789257. The reversal of 99789241 is 14298799.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84548025 + 15241216 = 9195^2 + 3904^2 .

It is an emirp because it is prime and its reverse (14298799) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99789241 - 2³ = 99789233 is a prime.

It is a Chen prime.

It is equal to p_5749987 and since 99789241 and 5749987 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (99789211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49894620 + 49894621.

It is an arithmetic number, because the mean of its divisors is an integer number (49894621).

Almost surely, 2^99789241 is an apocalyptic number.

It is an amenable number.

99789241 is a deficient number, since it is larger than the sum of its proper divisors (1).

99789241 is an equidigital number, since it uses as much as digits as its factorization.

99789241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 326592, while the sum is 49.

The square root of 99789241 is about 9989.4564917217. The cubic root of 99789241 is about 463.8325684675.

The spelling of 99789241 in words is "ninety-nine million, seven hundred eighty-nine thousand, two hundred forty-one".