98971272409 has 3 divisors (see below), whose sum is σ = 98971587007. Its totient is φ = 98970957812.

The previous prime is 98971272397. The next prime is 98971272451. The reversal of 98971272409 is 90427217989.

The square root of 98971272409 is 314597.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 90427217989 = 17 ⋅5319248117.

It can be written as a sum of positive squares in only one way, i.e., 96326433225 + 2644839184 = 310365^2 + 51428^2 .

It is not a de Polignac number, because 98971272409 - 2¹⁵ = 98971239641 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (98971279409) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 157299 + ... + 471895.

Almost surely, 2^98971272409 is an apocalyptic number.

98971272409 is the 314597-th square number.

98971272409 is the 157299-th centered octagonal number.

It is an amenable number.

98971272409 is a deficient number, since it is larger than the sum of its proper divisors (314598).

98971272409 is an frugal number, since it uses more digits than its factorization.

98971272409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 629194 (or 314597 counting only the distinct ones).

The product of its (nonzero) digits is 4572288, while the sum is 58.

The spelling of 98971272409 in words is "ninety-eight billion, nine hundred seventy-one million, two hundred seventy-two thousand, four hundred nine".