98779867 has 2 divisors, whose sum is σ = 98779868. Its totient is φ = 98779866.

The previous prime is 98779831. The next prime is 98779873. The reversal of 98779867 is 76897789.

It is a strong prime.

It is an emirp because it is prime and its reverse (76897789) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 98779867 - 2¹⁹ = 98255579 is a prime.

It is not a weakly prime, because it can be changed into another prime (98773867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49389933 + 49389934.

It is an arithmetic number, because the mean of its divisors is an integer number (49389934).

Almost surely, 2^98779867 is an apocalyptic number.

98779867 is a deficient number, since it is larger than the sum of its proper divisors (1).

98779867 is an equidigital number, since it uses as much as digits as its factorization.

98779867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10668672, while the sum is 61.

The square root of 98779867 is about 9938.8061154245. The cubic root of 98779867 is about 462.2633678235.

The spelling of 98779867 in words is "ninety-eight million, seven hundred seventy-nine thousand, eight hundred sixty-seven".