9730639 has 2 divisors, whose sum is σ = 9730640. Its totient is φ = 9730638.

The previous prime is 9730627. The next prime is 9730649. The reversal of 9730639 is 9360379.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9730639 - 2⁵ = 9730607 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9730598 and 9730607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9730649) 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, 4865319 + 4865320.

It is an arithmetic number, because the mean of its divisors is an integer number (4865320).

Almost surely, 2^9730639 is an apocalyptic number.

9730639 is a deficient number, since it is larger than the sum of its proper divisors (1).

9730639 is an equidigital number, since it uses as much as digits as its factorization.

9730639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30618, while the sum is 37.

The square root of 9730639 is about 3119.3972174124. The cubic root of 9730639 is about 213.4914336392.

It can be divided in two parts, 9 and 730639, that multiplied together give a triangular number (6575751 = T₃₆₂₆).

The spelling of 9730639 in words is "nine million, seven hundred thirty thousand, six hundred thirty-nine".