98765443209 has 32 divisors (see below), whose sum is σ = 140815825920. Its totient is φ = 61466803200.

The previous prime is 98765443193. The next prime is 98765443253. The reversal of 98765443209 is 90234456789.

It is not a de Polignac number, because 98765443209 - 2⁴ = 98765443193 is a prime.

It is a super-2 number, since 2×98765443209² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (98765444209) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 193839 + ... + 484875.

It is an arithmetic number, because the mean of its divisors is an integer number (4400494560).

Almost surely, 2^98765443209 is an apocalyptic number.

It is an amenable number.

98765443209 is a deficient number, since it is larger than the sum of its proper divisors (42050382711).

98765443209 is a wasteful number, since it uses less digits than its factorization.

98765443209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291201.

The product of its (nonzero) digits is 13063680, while the sum is 57.

The spelling of 98765443209 in words is "ninety-eight billion, seven hundred sixty-five million, four hundred forty-three thousand, two hundred nine".