729342919 has 2 divisors, whose sum is σ = 729342920. Its totient is φ = 729342918.

The previous prime is 729342881. The next prime is 729342937. The reversal of 729342919 is 919243927.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 729342919 - 2⁷ = 729342791 is a prime.

It is a super-2 number, since 2×729342919² = 1063882186990881122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (729342979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364671459 + 364671460.

It is an arithmetic number, because the mean of its divisors is an integer number (364671460).

Almost surely, 2^729342919 is an apocalyptic number.

729342919 is a deficient number, since it is larger than the sum of its proper divisors (1).

729342919 is an equidigital number, since it uses as much as digits as its factorization.

729342919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 244944, while the sum is 46.

The square root of 729342919 is about 27006.3496052317. The cubic root of 729342919 is about 900.1410968085.

The spelling of 729342919 in words is "seven hundred twenty-nine million, three hundred forty-two thousand, nine hundred nineteen".