98991043 has 2 divisors, whose sum is σ = 98991044. Its totient is φ = 98991042.

The previous prime is 98991037. The next prime is 98991047. The reversal of 98991043 is 34019989.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 98991043 - 2²¹ = 96893891 is a prime.

It is not a weakly prime, because it can be changed into another prime (98991047) 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, 49495521 + 49495522.

It is an arithmetic number, because the mean of its divisors is an integer number (49495522).

Almost surely, 2^98991043 is an apocalyptic number.

98991043 is a deficient number, since it is larger than the sum of its proper divisors (1).

98991043 is an equidigital number, since it uses as much as digits as its factorization.

98991043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 98991043 is about 9949.4242546994. The cubic root of 98991043 is about 462.5925490954.

The spelling of 98991043 in words is "ninety-eight million, nine hundred ninety-one thousand, forty-three".