98420409 has 12 divisors (see below), whose sum is σ = 142249536. Its totient is φ = 65573592.

The previous prime is 98420393. The next prime is 98420411. The reversal of 98420409 is 90402489.

It is a happy number.

It is not a de Polignac number, because 98420409 - 2⁴ = 98420393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (98420449) 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 in 11 ways as a sum of consecutive naturals, for example, 24244 + ... + 28010.

It is an arithmetic number, because the mean of its divisors is an integer number (11854128).

Almost surely, 2^98420409 is an apocalyptic number.

It is an amenable number.

98420409 is a deficient number, since it is larger than the sum of its proper divisors (43829127).

98420409 is a wasteful number, since it uses less digits than its factorization.

98420409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6676 (or 6673 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 98420409 is about 9920.7060736623. The cubic root of 98420409 is about 461.7019638473.

The spelling of 98420409 in words is "ninety-eight million, four hundred twenty thousand, four hundred nine".