146391 has 8 divisors (see below), whose sum is σ = 223104. Its totient is φ = 83640.

The previous prime is 146389. The next prime is 146407. The reversal of 146391 is 193641.

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

It is not a de Polignac number, because 146391 - 2¹ = 146389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3465 + ... + 3506.

It is an arithmetic number, because the mean of its divisors is an integer number (27888).

2¹⁴⁶³⁹¹ is an apocalyptic number.

146391 is a deficient number, since it is larger than the sum of its proper divisors (76713).

146391 is an equidigital number, since it uses as much as digits as its factorization.

146391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6981.

The product of its digits is 648, while the sum is 24.

The square root of 146391 is about 382.6107682750. The cubic root of 146391 is about 52.7033384148.

The spelling of 146391 in words is "one hundred forty-six thousand, three hundred ninety-one".