98404561 has 2 divisors, whose sum is σ = 98404562. Its totient is φ = 98404560.

The previous prime is 98404549. The next prime is 98404577. The reversal of 98404561 is 16540489.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91011600 + 7392961 = 9540^2 + 2719^2 .

It is a cyclic number.

It is not a de Polignac number, because 98404561 - 2⁷ = 98404433 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 98404561.

It is not a weakly prime, because it can be changed into another prime (98404531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49202280 + 49202281.

It is an arithmetic number, because the mean of its divisors is an integer number (49202281).

Almost surely, 2^98404561 is an apocalyptic number.

It is an amenable number.

98404561 is a deficient number, since it is larger than the sum of its proper divisors (1).

98404561 is an equidigital number, since it uses as much as digits as its factorization.

98404561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 98404561 is about 9919.9073080347. The cubic root of 98404561 is about 461.6771808930.

The spelling of 98404561 in words is "ninety-eight million, four hundred four thousand, five hundred sixty-one".