99995279 has 2 divisors, whose sum is σ = 99995280. Its totient is φ = 99995278.

The previous prime is 99995267. The next prime is 99995281. The reversal of 99995279 is 97259999.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99995279 is a prime.

Together with 99995281, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99995209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49997639 + 49997640.

It is an arithmetic number, because the mean of its divisors is an integer number (49997640).

Almost surely, 2^99995279 is an apocalyptic number.

99995279 is a deficient number, since it is larger than the sum of its proper divisors (1).

99995279 is an equidigital number, since it uses as much as digits as its factorization.

99995279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4133430, while the sum is 59.

The square root of 99995279 is about 9999.7639472140. The cubic root of 99995279 is about 464.1515789327.

The spelling of 99995279 in words is "ninety-nine million, nine hundred ninety-five thousand, two hundred seventy-nine".