59909 has 4 divisors (see below), whose sum is σ = 60480. Its totient is φ = 59340.

The previous prime is 59887. The next prime is 59921. The reversal of 59909 is 90995.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 90995 = 5 ⋅18199.

It is a cyclic number.

It is not a de Polignac number, because 59909 - 2¹² = 55813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (59929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77 + ... + 354.

It is an arithmetic number, because the mean of its divisors is an integer number (15120).

2⁵⁹⁹⁰⁹ is an apocalyptic number.

It is an amenable number.

59909 is a deficient number, since it is larger than the sum of its proper divisors (571).

59909 is a wasteful number, since it uses less digits than its factorization.

59909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570.

The product of its (nonzero) digits is 3645, while the sum is 32.

The square root of 59909 is about 244.7631508214. The cubic root of 59909 is about 39.1288745665.

The spelling of 59909 in words is "fifty-nine thousand, nine hundred nine".