729554009 has 2 divisors, whose sum is σ = 729554010. Its totient is φ = 729554008.

The previous prime is 729554003. The next prime is 729554011. The reversal of 729554009 is 900455927.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 452497984 + 277056025 = 21272^2 + 16645^2 .

It is a cyclic number.

It is not a de Polignac number, because 729554009 - 2²⁴ = 712776793 is a prime.

Together with 729554011, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (729554003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364777004 + 364777005.

It is an arithmetic number, because the mean of its divisors is an integer number (364777005).

Almost surely, 2^729554009 is an apocalyptic number.

It is an amenable number.

729554009 is a deficient number, since it is larger than the sum of its proper divisors (1).

729554009 is an equidigital number, since it uses as much as digits as its factorization.

729554009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 113400, while the sum is 41.

The square root of 729554009 is about 27010.2574774844. The cubic root of 729554009 is about 900.2279295136.

The spelling of 729554009 in words is "seven hundred twenty-nine million, five hundred fifty-four thousand, nine".