720404029 has 2 divisors, whose sum is σ = 720404030. Its totient is φ = 720404028.

The previous prime is 720404021. The next prime is 720404039. The reversal of 720404029 is 920404027.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 515971225 + 204432804 = 22715^2 + 14298^2 .

It is a cyclic number.

It is not a de Polignac number, because 720404029 - 2³ = 720404021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 720403988 and 720404006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (720404021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360202014 + 360202015.

It is an arithmetic number, because the mean of its divisors is an integer number (360202015).

Almost surely, 2^720404029 is an apocalyptic number.

It is an amenable number.

720404029 is a deficient number, since it is larger than the sum of its proper divisors (1).

720404029 is an equidigital number, since it uses as much as digits as its factorization.

720404029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 720404029 is about 26840.3433100249. The cubic root of 720404029 is about 896.4485677288.

The spelling of 720404029 in words is "seven hundred twenty million, four hundred four thousand, twenty-nine".