104539509 has 12 divisors (see below), whose sum is σ = 151351200. Its totient is φ = 69531624.

The previous prime is 104539483. The next prime is 104539517. The reversal of 104539509 is 905935401.

It is not a de Polignac number, because 104539509 - 2²⁴ = 87762293 is a prime.

It is a super-2 number, since 2×104539509² = 21857017883922162, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104539559) 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, 9279 + ... + 17180.

It is an arithmetic number, because the mean of its divisors is an integer number (12612600).

Almost surely, 2^104539509 is an apocalyptic number.

It is an amenable number.

104539509 is a deficient number, since it is larger than the sum of its proper divisors (46811691).

104539509 is a wasteful number, since it uses less digits than its factorization.

104539509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26904 (or 26901 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 36.

The square root of 104539509 is about 10224.4564158688. The cubic root of 104539509 is about 471.0787189077.

The spelling of 104539509 in words is "one hundred four million, five hundred thirty-nine thousand, five hundred nine".