98278879 has 2 divisors, whose sum is σ = 98278880. Its totient is φ = 98278878.

The previous prime is 98278877. The next prime is 98278891. The reversal of 98278879 is 97887289.

It is a weak prime.

It is an emirp because it is prime and its reverse (97887289) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 98278879 - 2¹ = 98278877 is a prime.

Together with 98278877, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (98278877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49139439 + 49139440.

It is an arithmetic number, because the mean of its divisors is an integer number (49139440).

Almost surely, 2^98278879 is an apocalyptic number.

98278879 is a deficient number, since it is larger than the sum of its proper divisors (1).

98278879 is an equidigital number, since it uses as much as digits as its factorization.

98278879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4064256, while the sum is 58.

The square root of 98278879 is about 9913.5704466151. The cubic root of 98278879 is about 461.4805462678.

The spelling of 98278879 in words is "ninety-eight million, two hundred seventy-eight thousand, eight hundred seventy-nine".