98737021 has 2 divisors, whose sum is σ = 98737022. Its totient is φ = 98737020.

The previous prime is 98737019. The next prime is 98737057. The reversal of 98737021 is 12073789.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81812025 + 16924996 = 9045^2 + 4114^2 .

It is a cyclic number.

It is not a de Polignac number, because 98737021 - 2¹ = 98737019 is a prime.

Together with 98737019, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (98737081) 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, 49368510 + 49368511.

It is an arithmetic number, because the mean of its divisors is an integer number (49368511).

Almost surely, 2^98737021 is an apocalyptic number.

It is an amenable number.

98737021 is a deficient number, since it is larger than the sum of its proper divisors (1).

98737021 is an equidigital number, since it uses as much as digits as its factorization.

98737021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 98737021 is about 9936.6503913542. The cubic root of 98737021 is about 462.1965222162.

The spelling of 98737021 in words is "ninety-eight million, seven hundred thirty-seven thousand, twenty-one".