99279601 has 2 divisors, whose sum is σ = 99279602. Its totient is φ = 99279600.

The previous prime is 99279599. The next prime is 99279613. The reversal of 99279601 is 10697299.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72250000 + 27029601 = 8500^2 + 5199^2 .

It is an emirp because it is prime and its reverse (10697299) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99279601 - 2¹ = 99279599 is a prime.

Together with 99279599, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (99279001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49639800 + 49639801.

It is an arithmetic number, because the mean of its divisors is an integer number (49639801).

Almost surely, 2^99279601 is an apocalyptic number.

It is an amenable number.

99279601 is a deficient number, since it is larger than the sum of its proper divisors (1).

99279601 is an equidigital number, since it uses as much as digits as its factorization.

99279601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 61236, while the sum is 43.

The square root of 99279601 is about 9963.9149434346. The cubic root of 99279601 is about 463.0415974270.

The spelling of 99279601 in words is "ninety-nine million, two hundred seventy-nine thousand, six hundred one".