729739501 has 4 divisors (see below), whose sum is σ = 772665372. Its totient is φ = 686813632.

The previous prime is 729739429. The next prime is 729739513. The reversal of 729739501 is 105937927.

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 241771401 + 487968100 = 15549^2 + 22090^2 .

It is a cyclic number.

It is not a de Polignac number, because 729739501 - 2¹⁹ = 729215213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (729739201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21462910 + ... + 21462943.

It is an arithmetic number, because the mean of its divisors is an integer number (193166343).

Almost surely, 2^729739501 is an apocalyptic number.

It is an amenable number.

729739501 is a deficient number, since it is larger than the sum of its proper divisors (42925871).

729739501 is a wasteful number, since it uses less digits than its factorization.

729739501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42925870.

The product of its (nonzero) digits is 119070, while the sum is 43.

The square root of 729739501 is about 27013.6909917916. The cubic root of 729739501 is about 900.3042185554.

The spelling of 729739501 in words is "seven hundred twenty-nine million, seven hundred thirty-nine thousand, five hundred one".