9854965904644 has 27 divisors (see below), whose sum is σ = 20061984346677. Its totient is φ = 4223537980704.

The previous prime is 9854965904617. The next prime is 9854965904647. The reversal of 9854965904644 is 4464095694589.

The square root of 9854965904644 is 3139262.

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

It can be written as a sum of positive squares in only one way, i.e., 540945540100 + 9314020364544 = 735490^2 + 3051888^2 .

It is not an unprimeable number, because it can be changed into a prime (9854965904647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 43837552 + ... + 44061784.

Almost surely, 2^{9854965904644} is an apocalyptic number.

9854965904644 is the 3139262-nd square number.

It is an amenable number.

9854965904644 is an abundant number, since it is smaller than the sum of its proper divisors (10207018442033).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9854965904644 is an frugal number, since it uses more digits than its factorization.

9854965904644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448484 (or 224242 counting only the distinct ones).

The product of its (nonzero) digits is 1343692800, while the sum is 73.

The spelling of 9854965904644 in words is "nine trillion, eight hundred fifty-four billion, nine hundred sixty-five million, nine hundred four thousand, six hundred forty-four".