98044721 has 2 divisors, whose sum is σ = 98044722. Its totient is φ = 98044720.

The previous prime is 98044717. The next prime is 98044741. The reversal of 98044721 is 12744089.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55651600 + 42393121 = 7460^2 + 6511^2 .

It is an emirp because it is prime and its reverse (12744089) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 98044721 - 2² = 98044717 is a prime.

It is a super-2 number, since 2×98044721² = 19225534631935682, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (98044711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49022360 + 49022361.

It is an arithmetic number, because the mean of its divisors is an integer number (49022361).

Almost surely, 2^98044721 is an apocalyptic number.

It is an amenable number.

98044721 is a deficient number, since it is larger than the sum of its proper divisors (1).

98044721 is an equidigital number, since it uses as much as digits as its factorization.

98044721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 98044721 is about 9901.7534305799. The cubic root of 98044721 is about 461.1137489223.

The spelling of 98044721 in words is "ninety-eight million, forty-four thousand, seven hundred twenty-one".