98537861 has 2 divisors, whose sum is σ = 98537862. Its totient is φ = 98537860.

The previous prime is 98537851. The next prime is 98537869. The reversal of 98537861 is 16873589.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97022500 + 1515361 = 9850^2 + 1231^2 .

It is an emirp because it is prime and its reverse (16873589) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 98537861 - 2²⁶ = 31428997 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (98537869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49268930 + 49268931.

It is an arithmetic number, because the mean of its divisors is an integer number (49268931).

Almost surely, 2^98537861 is an apocalyptic number.

It is an amenable number.

98537861 is a deficient number, since it is larger than the sum of its proper divisors (1).

98537861 is an equidigital number, since it uses as much as digits as its factorization.

98537861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 47.

The square root of 98537861 is about 9926.6238470086. The cubic root of 98537861 is about 461.8855513187.

The spelling of 98537861 in words is "ninety-eight million, five hundred thirty-seven thousand, eight hundred sixty-one".