104509729 has 3 divisors (see below), whose sum is σ = 104519953. Its totient is φ = 104499506.

The previous prime is 104509679. The next prime is 104509739. The reversal of 104509729 is 927905401.

The square root of 104509729 is 10223.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a de Polignac number, because none of the positive numbers 2^k-104509729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (104509739) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 5112 + ... + 15334.

Almost surely, 2^104509729 is an apocalyptic number.

104509729 is the 10223-rd square number.

104509729 is the 5112-nd centered octagonal number.

It is an amenable number.

104509729 is a deficient number, since it is larger than the sum of its proper divisors (10224).

104509729 is an frugal number, since it uses more digits than its factorization.

104509729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20446 (or 10223 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 37.

The cubic root of 104509729 is about 471.0339828498.

The spelling of 104509729 in words is "one hundred four million, five hundred nine thousand, seven hundred twenty-nine".