9159901 has 2 divisors, whose sum is σ = 9159902. Its totient is φ = 9159900.

The previous prime is 9159869. The next prime is 9159907. The reversal of 9159901 is 1099519.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6100900 + 3059001 = 2470^2 + 1749^2 .

It is an emirp because it is prime and its reverse (1099519) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9159901 - 2⁵ = 9159869 is a prime.

9159901 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9159907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4579950 + 4579951.

It is an arithmetic number, because the mean of its divisors is an integer number (4579951).

Almost surely, 2^9159901 is an apocalyptic number.

It is an amenable number.

9159901 is a deficient number, since it is larger than the sum of its proper divisors (1).

9159901 is an equidigital number, since it uses as much as digits as its factorization.

9159901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3645, while the sum is 34.

The square root of 9159901 is about 3026.5328347798. The cubic root of 9159901 is about 209.2330375310.

It can be divided in two parts, 915 and 9901, that added together give a square (10816 = 104²).

The spelling of 9159901 in words is "nine million, one hundred fifty-nine thousand, nine hundred one".