98645409 has 6 divisors (see below), whose sum is σ = 142487826. Its totient is φ = 65763600.

The previous prime is 98645401. The next prime is 98645429. The reversal of 98645409 is 90454689.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 74909025 + 23736384 = 8655^2 + 4872^2 .

It is not a de Polignac number, because 98645409 - 2³ = 98645401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (98645401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5480292 + ... + 5480309.

It is an arithmetic number, because the mean of its divisors is an integer number (23747971).

Almost surely, 2^98645409 is an apocalyptic number.

It is an amenable number.

98645409 is a deficient number, since it is larger than the sum of its proper divisors (43842417).

98645409 is a wasteful number, since it uses less digits than its factorization.

98645409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10960607 (or 10960604 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 98645409 is about 9932.0395186487. The cubic root of 98645409 is about 462.0535300880.

The spelling of 98645409 in words is "ninety-eight million, six hundred forty-five thousand, four hundred nine".