723629129 has 2 divisors, whose sum is σ = 723629130. Its totient is φ = 723629128.

The previous prime is 723629119. The next prime is 723629147. The reversal of 723629129 is 921926327.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 374499904 + 349129225 = 19352^2 + 18685^2 .

It is a cyclic number.

It is not a de Polignac number, because 723629129 - 2²⁰ = 722580553 is a prime.

It is not a weakly prime, because it can be changed into another prime (723629119) 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, 361814564 + 361814565.

It is an arithmetic number, because the mean of its divisors is an integer number (361814565).

Almost surely, 2^723629129 is an apocalyptic number.

It is an amenable number.

723629129 is a deficient number, since it is larger than the sum of its proper divisors (1).

723629129 is an equidigital number, since it uses as much as digits as its factorization.

723629129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 41.

The square root of 723629129 is about 26900.3555552710. The cubic root of 723629129 is about 897.7843147623.

The spelling of 723629129 in words is "seven hundred twenty-three million, six hundred twenty-nine thousand, one hundred twenty-nine".