729999797 has 2 divisors, whose sum is σ = 729999798. Its totient is φ = 729999796.

The previous prime is 729999763. The next prime is 729999799. The reversal of 729999797 is 797999927.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 534950641 + 195049156 = 23129^2 + 13966^2 .

It is a cyclic number.

It is not a de Polignac number, because 729999797 - 2⁶ = 729999733 is a prime.

Together with 729999799, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (729999799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364999898 + 364999899.

It is an arithmetic number, because the mean of its divisors is an integer number (364999899).

Almost surely, 2^729999797 is an apocalyptic number.

It is an amenable number.

729999797 is a deficient number, since it is larger than the sum of its proper divisors (1).

729999797 is an equidigital number, since it uses as much as digits as its factorization.

729999797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40507614, while the sum is 68.

The square root of 729999797 is about 27018.5084155288. The cubic root of 729999797 is about 900.4112511466.

The spelling of 729999797 in words is "seven hundred twenty-nine million, nine hundred ninety-nine thousand, seven hundred ninety-seven".