104893720129 has 9 divisors (see below), whose sum is σ = 115300319169. Its totient is φ = 95354688660.

The previous prime is 104893720123. The next prime is 104893720159. The reversal of 104893720129 is 921027398401.

It is a happy number.

The square root of 104893720129 is 323873.

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

It is a de Polignac number, because none of the positive numbers 2^k-104893720129 is a prime.

It is a super-2 number, since 2×104893720129² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (104893720123) 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, 3547882 + ... + 3577324.

Almost surely, 2^104893720129 is an apocalyptic number.

104893720129 is the 323873-rd square number.

104893720129 is the 161937-th centered octagonal number.

It is an amenable number.

104893720129 is a deficient number, since it is larger than the sum of its proper divisors (10406599040).

104893720129 is an frugal number, since it uses more digits than its factorization.

104893720129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58908 (or 29454 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 46.

The spelling of 104893720129 in words is "one hundred four billion, eight hundred ninety-three million, seven hundred twenty thousand, one hundred twenty-nine".