729772913 has 2 divisors, whose sum is σ = 729772914. Its totient is φ = 729772912.

The previous prime is 729772903. The next prime is 729772937. The reversal of 729772913 is 319277927.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 537451489 + 192321424 = 23183^2 + 13868^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-729772913 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (729772903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364886456 + 364886457.

It is an arithmetic number, because the mean of its divisors is an integer number (364886457).

Almost surely, 2^729772913 is an apocalyptic number.

It is an amenable number.

729772913 is a deficient number, since it is larger than the sum of its proper divisors (1).

729772913 is an equidigital number, since it uses as much as digits as its factorization.

729772913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 333396, while the sum is 47.

The square root of 729772913 is about 27014.3094118654. The cubic root of 729772913 is about 900.3179588493.

The spelling of 729772913 in words is "seven hundred twenty-nine million, seven hundred seventy-two thousand, nine hundred thirteen".