729348885 has 12 divisors (see below), whose sum is σ = 1264204812. Its totient is φ = 388986048.

The previous prime is 729348881. The next prime is 729348889. The reversal of 729348885 is 588843927.

It is a happy number.

729348885 is a `hidden beast` number, since 72 + 93 + 488 + 8 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (729348881) and next prime (729348889).

It can be written as a sum of positive squares in 2 ways, for example, as 314778564 + 414570321 = 17742^2 + 20361^2 .

It is not a de Polignac number, because 729348885 - 2² = 729348881 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (729348881) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8103832 + ... + 8103921.

It is an arithmetic number, because the mean of its divisors is an integer number (105350401).

Almost surely, 2^729348885 is an apocalyptic number.

It is an amenable number.

729348885 is a deficient number, since it is larger than the sum of its proper divisors (534855927).

729348885 is a wasteful number, since it uses less digits than its factorization.

729348885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16207764 (or 16207761 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 54.

The square root of 729348885 is about 27006.4600605114. The cubic root of 729348885 is about 900.1435511763.

The spelling of 729348885 in words is "seven hundred twenty-nine million, three hundred forty-eight thousand, eight hundred eighty-five".