98102409 has 4 divisors (see below), whose sum is σ = 130803216. Its totient is φ = 65401604.

The previous prime is 98102401. The next prime is 98102441. The reversal of 98102409 is 90420189.

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 98102409 - 2³ = 98102401 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 98102409.

It is not an unprimeable number, because it can be changed into a prime (98102401) 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, 16350399 + ... + 16350404.

It is an arithmetic number, because the mean of its divisors is an integer number (32700804).

Almost surely, 2^98102409 is an apocalyptic number.

It is an amenable number.

98102409 is a deficient number, since it is larger than the sum of its proper divisors (32700807).

98102409 is a wasteful number, since it uses less digits than its factorization.

98102409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32700806.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 98102409 is about 9904.6660216284. Note that the first 3 decimals coincide. The cubic root of 98102409 is about 461.2041685941.

The spelling of 98102409 in words is "ninety-eight million, one hundred two thousand, four hundred nine".