9859957 has 2 divisors, whose sum is σ = 9859958. Its totient is φ = 9859956.

The previous prime is 9859937. The next prime is 9859963. The reversal of 9859957 is 7599589.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6922161 + 2937796 = 2631^2 + 1714^2 .

It is a cyclic number.

It is not a de Polignac number, because 9859957 - 2¹⁵ = 9827189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9859937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4929978 + 4929979.

It is an arithmetic number, because the mean of its divisors is an integer number (4929979).

Almost surely, 2^9859957 is an apocalyptic number.

It is an amenable number.

9859957 is a deficient number, since it is larger than the sum of its proper divisors (1).

9859957 is an equidigital number, since it uses as much as digits as its factorization.

9859957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1020600, while the sum is 52.

The square root of 9859957 is about 3140.0568466192. The cubic root of 9859957 is about 214.4330257124.

It can be divided in two parts, 9859 and 957, that added together give a square (10816 = 104²).

The spelling of 9859957 in words is "nine million, eight hundred fifty-nine thousand, nine hundred fifty-seven".