9958479409 has 2 divisors, whose sum is σ = 9958479410. Its totient is φ = 9958479408.

The previous prime is 9958479397. The next prime is 9958479431. The reversal of 9958479409 is 9049748599.

9958479409 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7215653025 + 2742826384 = 84945^2 + 52372^2 .

It is an emirp because it is prime and its reverse (9049748599) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9958479409 - 2⁹ = 9958478897 is a prime.

It is not a weakly prime, because it can be changed into another prime (9958479449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4979239704 + 4979239705.

It is an arithmetic number, because the mean of its divisors is an integer number (4979239705).

Almost surely, 2^9958479409 is an apocalyptic number.

It is an amenable number.

9958479409 is a deficient number, since it is larger than the sum of its proper divisors (1).

9958479409 is an equidigital number, since it uses as much as digits as its factorization.

9958479409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29393280, while the sum is 64.

The square root of 9958479409 is about 99792.1811015272. The cubic root of 9958479409 is about 2151.4487735904.

The spelling of 9958479409 in words is "nine billion, nine hundred fifty-eight million, four hundred seventy-nine thousand, four hundred nine".