109683729 has 9 divisors (see below), whose sum is σ = 158477449. Its totient is φ = 73101540.

The previous prime is 109683719. The next prime is 109683781. The reversal of 109683729 is 927386901.

The square root of 109683729 is 10473.

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

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 109683729 - 2⁵ = 109683697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109683709) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 29674 + ... + 33164.

Almost surely, 2^109683729 is an apocalyptic number.

109683729 is the 10473-rd square number.

109683729 is the 5237-th centered octagonal number.

It is an amenable number.

109683729 is a deficient number, since it is larger than the sum of its proper divisors (48793720).

109683729 is an frugal number, since it uses more digits than its factorization.

109683729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6988 (or 3494 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The cubic root of 109683729 is about 478.6823366710.

The spelling of 109683729 in words is "one hundred nine million, six hundred eighty-three thousand, seven hundred twenty-nine".