98378879 has 2 divisors, whose sum is σ = 98378880. Its totient is φ = 98378878.

The previous prime is 98378873. The next prime is 98378897. The reversal of 98378879 is 97887389.

Together with next prime (98378897) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-98378879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (98378873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49189439 + 49189440.

It is an arithmetic number, because the mean of its divisors is an integer number (49189440).

Almost surely, 2^98378879 is an apocalyptic number.

98378879 is a deficient number, since it is larger than the sum of its proper divisors (1).

98378879 is an equidigital number, since it uses as much as digits as its factorization.

98378879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6096384, while the sum is 59.

The square root of 98378879 is about 9918.6127558243. The cubic root of 98378879 is about 461.6370139710.

The spelling of 98378879 in words is "ninety-eight million, three hundred seventy-eight thousand, eight hundred seventy-nine".