729319901 has 4 divisors (see below), whose sum is σ = 732532992. Its totient is φ = 726106812.

The previous prime is 729319879. The next prime is 729319951. The reversal of 729319901 is 109913927.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 109913927 = 563 ⋅195229.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-729319901 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (729319951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1606205 + ... + 1606658.

It is an arithmetic number, because the mean of its divisors is an integer number (183133248).

Almost surely, 2^729319901 is an apocalyptic number.

It is an amenable number.

729319901 is a deficient number, since it is larger than the sum of its proper divisors (3213091).

729319901 is a wasteful number, since it uses less digits than its factorization.

729319901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3213090.

The product of its (nonzero) digits is 30618, while the sum is 41.

The square root of 729319901 is about 27005.9234428301. The cubic root of 729319901 is about 900.1316272503.

The spelling of 729319901 in words is "seven hundred twenty-nine million, three hundred nineteen thousand, nine hundred one".