9960538409 has 2 divisors, whose sum is σ = 9960538410. Its totient is φ = 9960538408.

The previous prime is 9960538387. The next prime is 9960538453. The reversal of 9960538409 is 9048350699.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5481181225 + 4479357184 = 74035^2 + 66928^2 .

It is a cyclic number.

It is not a de Polignac number, because 9960538409 - 2¹² = 9960534313 is a prime.

It is not a weakly prime, because it can be changed into another prime (9960838409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4980269204 + 4980269205.

It is an arithmetic number, because the mean of its divisors is an integer number (4980269205).

Almost surely, 2^9960538409 is an apocalyptic number.

It is an amenable number.

9960538409 is a deficient number, since it is larger than the sum of its proper divisors (1).

9960538409 is an equidigital number, since it uses as much as digits as its factorization.

9960538409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2099520, while the sum is 53.

The square root of 9960538409 is about 99802.4970078404. The cubic root of 9960538409 is about 2151.5970401271.

The spelling of 9960538409 in words is "nine billion, nine hundred sixty million, five hundred thirty-eight thousand, four hundred nine".