9958237969 has 2 divisors, whose sum is σ = 9958237970. Its totient is φ = 9958237968.

The previous prime is 9958237897. The next prime is 9958237981. The reversal of 9958237969 is 9697328599.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9567187344 + 391050625 = 97812^2 + 19775^2 .

It is a cyclic number.

It is not a de Polignac number, because 9958237969 - 2²³ = 9949849361 is a prime.

It is a super-2 number, since 2×9958237969² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9958232969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4979118984 + 4979118985.

It is an arithmetic number, because the mean of its divisors is an integer number (4979118985).

Almost surely, 2^9958237969 is an apocalyptic number.

It is an amenable number.

9958237969 is a deficient number, since it is larger than the sum of its proper divisors (1).

9958237969 is an equidigital number, since it uses as much as digits as its factorization.

9958237969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 66134880, while the sum is 67.

The square root of 9958237969 is about 99790.9713801805. The cubic root of 9958237969 is about 2151.4313863981.

The spelling of 9958237969 in words is "nine billion, nine hundred fifty-eight million, two hundred thirty-seven thousand, nine hundred sixty-nine".