146809 has 8 divisors (see below), whose sum is σ = 165312. Its totient is φ = 129360.

The previous prime is 146807. The next prime is 146819. The reversal of 146809 is 908641.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 146809 - 2¹ = 146807 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 (146801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54 + ... + 544.

It is an arithmetic number, because the mean of its divisors is an integer number (20664).

2¹⁴⁶⁸⁰⁹ is an apocalyptic number.

It is an amenable number.

146809 is a deficient number, since it is larger than the sum of its proper divisors (18503).

146809 is a wasteful number, since it uses less digits than its factorization.

146809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 146809 is about 383.1566259377. The cubic root of 146809 is about 52.7534532004.

The spelling of 146809 in words is "one hundred forty-six thousand, eight hundred nine".