716443729 has 4 divisors (see below), whose sum is σ = 717421876. Its totient is φ = 715465584.

The previous prime is 716443727. The next prime is 716443781. The reversal of 716443729 is 927344617.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 578498704 + 137945025 = 24052^2 + 11745^2 .

It is a cyclic number.

It is not a de Polignac number, because 716443729 - 2¹ = 716443727 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (716443727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 487974 + ... + 489439.

It is an arithmetic number, because the mean of its divisors is an integer number (179355469).

Almost surely, 2^716443729 is an apocalyptic number.

It is an amenable number.

716443729 is a deficient number, since it is larger than the sum of its proper divisors (978147).

716443729 is an equidigital number, since it uses as much as digits as its factorization.

716443729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 978146.

The product of its digits is 254016, while the sum is 43.

The square root of 716443729 is about 26766.4665019498. The cubic root of 716443729 is about 894.8028566124.

The spelling of 716443729 in words is "seven hundred sixteen million, four hundred forty-three thousand, seven hundred twenty-nine".