729870841 has 8 divisors (see below), whose sum is σ = 845887104. Its totient is φ = 616791840.

The previous prime is 729870839. The next prime is 729870857. The reversal of 729870841 is 148078927.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 729870841 - 2¹ = 729870839 is a prime.

It is a super-2 number, since 2×729870841² = 1065422889084094562, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 729870791 and 729870800.

It is not an unprimeable number, because it can be changed into a prime (729870871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 733780 + ... + 734773.

It is an arithmetic number, because the mean of its divisors is an integer number (105735888).

Almost surely, 2^729870841 is an apocalyptic number.

729870841 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

It is an amenable number.

729870841 is a deficient number, since it is larger than the sum of its proper divisors (116016263).

729870841 is a wasteful number, since it uses less digits than its factorization.

729870841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1468631.

The product of its (nonzero) digits is 225792, while the sum is 46.

The square root of 729870841 is about 27016.1218719490. The cubic root of 729870841 is about 900.3582281769.

The spelling of 729870841 in words is "seven hundred twenty-nine million, eight hundred seventy thousand, eight hundred forty-one".