98974509 has 4 divisors (see below), whose sum is σ = 131966016. Its totient is φ = 65983004.

The previous prime is 98974489. The next prime is 98974517. The reversal of 98974509 is 90547989.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 98974509 - 2⁹ = 98973997 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98974559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16495749 + ... + 16495754.

It is an arithmetic number, because the mean of its divisors is an integer number (32991504).

Almost surely, 2^98974509 is an apocalyptic number.

It is an amenable number.

98974509 is a deficient number, since it is larger than the sum of its proper divisors (32991507).

98974509 is a wasteful number, since it uses less digits than its factorization.

98974509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32991506.

The product of its (nonzero) digits is 816480, while the sum is 51.

The square root of 98974509 is about 9948.5933176505. The cubic root of 98974509 is about 462.5667927884.

The spelling of 98974509 in words is "ninety-eight million, nine hundred seventy-four thousand, five hundred nine".