90099941 has 2 divisors, whose sum is σ = 90099942. Its totient is φ = 90099940.

The previous prime is 90099937. The next prime is 90099943. The reversal of 90099941 is 14999009.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47472100 + 42627841 = 6890^2 + 6529^2 .

It is a cyclic number.

It is not a de Polignac number, because 90099941 - 2² = 90099937 is a prime.

It is a Sophie Germain prime.

Together with 90099943, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90099943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45049970 + 45049971.

It is an arithmetic number, because the mean of its divisors is an integer number (45049971).

Almost surely, 2^90099941 is an apocalyptic number.

It is an amenable number.

90099941 is a deficient number, since it is larger than the sum of its proper divisors (1).

90099941 is an equidigital number, since it uses as much as digits as its factorization.

90099941 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26244, while the sum is 41.

The square root of 90099941 is about 9492.0988722200. The cubic root of 90099941 is about 448.3062933194.

The spelling of 90099941 in words is "ninety million, ninety-nine thousand, nine hundred forty-one".