10309729 has 2 divisors, whose sum is σ = 10309730. Its totient is φ = 10309728.

The previous prime is 10309709. The next prime is 10309751. The reversal of 10309729 is 92790301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8567329 + 1742400 = 2927^2 + 1320^2 .

It is a cyclic number.

It is not a de Polignac number, because 10309729 - 2¹¹ = 10307681 is a prime.

It is a Chen prime.

It is equal to p₆₈₃₇₇₀ and since 10309729 and 683770 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10309729.

It is not a weakly prime, because it can be changed into another prime (10309709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5154864 + 5154865.

It is an arithmetic number, because the mean of its divisors is an integer number (5154865).

Almost surely, 2^10309729 is an apocalyptic number.

It is an amenable number.

10309729 is a deficient number, since it is larger than the sum of its proper divisors (1).

10309729 is an equidigital number, since it uses as much as digits as its factorization.

10309729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3402, while the sum is 31.

The square root of 10309729 is about 3210.8766715649. The cubic root of 10309729 is about 217.6451948121.

The spelling of 10309729 in words is "ten million, three hundred nine thousand, seven hundred twenty-nine".