984947262749489 has 4 divisors (see below), whose sum is σ = 1060712436807156. Its totient is φ = 909182088691824.

The previous prime is 984947262749449. The next prime is 984947262749491.

984947262749489 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 321591592350625 + 663355670398864 = 17932975^2 + 25755692^2 .

It is a cyclic number.

It is not a de Polignac number, because 984947262749489 - 2²⁸ = 984946994314033 is a prime.

It is a super-2 number, since 2×984947262749489² (a number of 31 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 984947262749398 and 984947262749407.

It is not an unprimeable number, because it can be changed into a prime (984947262749449) 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, 37882587028814 + ... + 37882587028839.

It is an arithmetic number, because the mean of its divisors is an integer number (265178109201789).

Almost surely, 2^{984947262749489} is an apocalyptic number.

It is an amenable number.

984947262749489 is a deficient number, since it is larger than the sum of its proper divisors (75765174057667).

984947262749489 is a wasteful number, since it uses less digits than its factorization.

984947262749489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75765174057666.

The product of its digits is 126414618624, while the sum is 92.

The spelling of 984947262749489 in words is "nine hundred eighty-four trillion, nine hundred forty-seven billion, two hundred sixty-two million, seven hundred forty-nine thousand, four hundred eighty-nine".