98972771 has 2 divisors, whose sum is σ = 98972772. Its totient is φ = 98972770.

The previous prime is 98972761. The next prime is 98972777. The reversal of 98972771 is 17727989.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 98972771 - 2⁶ = 98972707 is a prime.

It is not a weakly prime, because it can be changed into another prime (98972777) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49486385 + 49486386.

It is an arithmetic number, because the mean of its divisors is an integer number (49486386).

Almost surely, 2^98972771 is an apocalyptic number.

98972771 is a deficient number, since it is larger than the sum of its proper divisors (1).

98972771 is an equidigital number, since it uses as much as digits as its factorization.

98972771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 444528, while the sum is 50.

The square root of 98972771 is about 9948.5059682346. The cubic root of 98972771 is about 462.5640852030.

The spelling of 98972771 in words is "ninety-eight million, nine hundred seventy-two thousand, seven hundred seventy-one".