98087881 has 2 divisors, whose sum is σ = 98087882. Its totient is φ = 98087880.

The previous prime is 98087839. The next prime is 98087887. The reversal of 98087881 is 18878089.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69572281 + 28515600 = 8341^2 + 5340^2 .

It is an emirp because it is prime and its reverse (18878089) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 98087881 - 2¹¹ = 98085833 is a prime.

It is a super-2 number, since 2×98087881² = 19242464798140322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (98087887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49043940 + 49043941.

It is an arithmetic number, because the mean of its divisors is an integer number (49043941).

Almost surely, 2^98087881 is an apocalyptic number.

It is an amenable number.

98087881 is a deficient number, since it is larger than the sum of its proper divisors (1).

98087881 is an equidigital number, since it uses as much as digits as its factorization.

98087881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 258048, while the sum is 49.

The square root of 98087881 is about 9903.9326027594. The cubic root of 98087881 is about 461.1814008728.

It can be divided in two parts, 9808 and 7881, that added together give a square (17689 = 133²).

The spelling of 98087881 in words is "ninety-eight million, eighty-seven thousand, eight hundred eighty-one".