9920502241 has 4 divisors (see below), whose sum is σ = 10683617812. Its totient is φ = 9157386672.

The previous prime is 9920502217. The next prime is 9920502259. The reversal of 9920502241 is 1422050299.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1422050299 = 311 ⋅4572509.

It can be written as a sum of positive squares in 2 ways, for example, as 384003216 + 9536499025 = 19596^2 + 97655^2 .

It is a cyclic number.

It is not a de Polignac number, because 9920502241 - 2⁹ = 9920501729 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9920502197 and 9920502206.

It is not an unprimeable number, because it can be changed into a prime (9920502841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 381557766 + ... + 381557791.

It is an arithmetic number, because the mean of its divisors is an integer number (2670904453).

Almost surely, 2^9920502241 is an apocalyptic number.

It is an amenable number.

9920502241 is a deficient number, since it is larger than the sum of its proper divisors (763115571).

9920502241 is a wasteful number, since it uses less digits than its factorization.

9920502241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763115570.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 9920502241 is about 99601.7180624913. The cubic root of 9920502241 is about 2148.7104032023.

The spelling of 9920502241 in words is "nine billion, nine hundred twenty million, five hundred two thousand, two hundred forty-one".