98735821 has 2 divisors, whose sum is σ = 98735822. Its totient is φ = 98735820.

The previous prime is 98735753. The next prime is 98735839. The reversal of 98735821 is 12853789.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64979721 + 33756100 = 8061^2 + 5810^2 .

It is a cyclic number.

It is not a de Polignac number, because 98735821 - 2⁹ = 98735309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (98735891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49367910 + 49367911.

It is an arithmetic number, because the mean of its divisors is an integer number (49367911).

Almost surely, 2^98735821 is an apocalyptic number.

It is an amenable number.

98735821 is a deficient number, since it is larger than the sum of its proper divisors (1).

98735821 is an equidigital number, since it uses as much as digits as its factorization.

98735821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 43.

The square root of 98735821 is about 9936.5900086498. The cubic root of 98735821 is about 462.1946497740.

The spelling of 98735821 in words is "ninety-eight million, seven hundred thirty-five thousand, eight hundred twenty-one".