9957901 has 2 divisors, whose sum is σ = 9957902. Its totient is φ = 9957900.

The previous prime is 9957889. The next prime is 9957947. The reversal of 9957901 is 1097599.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7155625 + 2802276 = 2675^2 + 1674^2 .

It is an emirp because it is prime and its reverse (1097599) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9957901 - 2¹¹ = 9955853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9957001) 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, 4978950 + 4978951.

It is an arithmetic number, because the mean of its divisors is an integer number (4978951).

Almost surely, 2^9957901 is an apocalyptic number.

It is an amenable number.

9957901 is a deficient number, since it is larger than the sum of its proper divisors (1).

9957901 is an equidigital number, since it uses as much as digits as its factorization.

9957901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25515, while the sum is 40.

The square root of 9957901 is about 3155.6142032891. The cubic root of 9957901 is about 215.1407119258.

The spelling of 9957901 in words is "nine million, nine hundred fifty-seven thousand, nine hundred one".