9726949 has 2 divisors, whose sum is σ = 9726950. Its totient is φ = 9726948.

The previous prime is 9726947. The next prime is 9726961. The reversal of 9726949 is 9496279.

9726949 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., 6853924 + 2873025 = 2618^2 + 1695^2 .

It is a cyclic number.

It is not a de Polignac number, because 9726949 - 2¹ = 9726947 is a prime.

It is a super-2 number, since 2×9726949² = 189227073697202, which contains 22 as substring.

Together with 9726947, it forms a pair of twin primes.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 9726899 and 9726908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9726943) 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, 4863474 + 4863475.

It is an arithmetic number, because the mean of its divisors is an integer number (4863475).

Almost surely, 2^9726949 is an apocalyptic number.

It is an amenable number.

9726949 is a deficient number, since it is larger than the sum of its proper divisors (1).

9726949 is an equidigital number, since it uses as much as digits as its factorization.

9726949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 244944, while the sum is 46.

The square root of 9726949 is about 3118.8057009054. The cubic root of 9726949 is about 213.4644438738.

It can be divided in two parts, 972 and 6949, that added together give a square (7921 = 89²).

The spelling of 9726949 in words is "nine million, seven hundred twenty-six thousand, nine hundred forty-nine".