9990388159 has 2 divisors, whose sum is σ = 9990388160. Its totient is φ = 9990388158.

The previous prime is 9990388153. The next prime is 9990388183. The reversal of 9990388159 is 9518830999.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (9518830999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9990388159 - 2³ = 9990388151 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9990388097 and 9990388106.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9990388151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4995194079 + 4995194080.

It is an arithmetic number, because the mean of its divisors is an integer number (4995194080).

Almost surely, 2^9990388159 is an apocalyptic number.

9990388159 is a deficient number, since it is larger than the sum of its proper divisors (1).

9990388159 is an equidigital number, since it uses as much as digits as its factorization.

9990388159 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6298560, while the sum is 61.

The square root of 9990388159 is about 99951.9292410107. The cubic root of 9990388159 is about 2153.7441992989.

The spelling of 9990388159 in words is "nine billion, nine hundred ninety million, three hundred eighty-eight thousand, one hundred fifty-nine".