98340721 has 2 divisors, whose sum is σ = 98340722. Its totient is φ = 98340720.

The previous prime is 98340707. The next prime is 98340731. The reversal of 98340721 is 12704389.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53450721 + 44890000 = 7311^2 + 6700^2 .

It is a cyclic number.

It is not a de Polignac number, because 98340721 - 2²⁵ = 64786289 is a prime.

It is not a weakly prime, because it can be changed into another prime (98340731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49170360 + 49170361.

It is an arithmetic number, because the mean of its divisors is an integer number (49170361).

Almost surely, 2^98340721 is an apocalyptic number.

It is an amenable number.

98340721 is a deficient number, since it is larger than the sum of its proper divisors (1).

98340721 is an equidigital number, since it uses as much as digits as its factorization.

98340721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 98340721 is about 9916.6890139804. The cubic root of 98340721 is about 461.5773215407.

The spelling of 98340721 in words is "ninety-eight million, three hundred forty thousand, seven hundred twenty-one".