729442957 has 2 divisors, whose sum is σ = 729442958. Its totient is φ = 729442956.

The previous prime is 729442951. The next prime is 729442993. The reversal of 729442957 is 759244927.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 367910761 + 361532196 = 19181^2 + 19014^2 .

It is a cyclic number.

It is not a de Polignac number, because 729442957 - 2¹⁹ = 728918669 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 729442957.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (729442951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364721478 + 364721479.

It is an arithmetic number, because the mean of its divisors is an integer number (364721479).

Almost surely, 2^729442957 is an apocalyptic number.

It is an amenable number.

729442957 is a deficient number, since it is larger than the sum of its proper divisors (1).

729442957 is an equidigital number, since it uses as much as digits as its factorization.

729442957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1270080, while the sum is 49.

The square root of 729442957 is about 27008.2016617175. The cubic root of 729442957 is about 900.1822499232.

The spelling of 729442957 in words is "seven hundred twenty-nine million, four hundred forty-two thousand, nine hundred fifty-seven".