468139 has 4 divisors (see below), whose sum is σ = 535024. Its totient is φ = 401256.

The previous prime is 468137. The next prime is 468151. The reversal of 468139 is 931864.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 468139 - 2¹ = 468137 is a prime.

468139 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 468139.

It is not an unprimeable number, because it can be changed into a prime (468133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33432 + ... + 33445.

It is an arithmetic number, because the mean of its divisors is an integer number (133756).

2⁴⁶⁸¹³⁹ is an apocalyptic number.

468139 is a deficient number, since it is larger than the sum of its proper divisors (66885).

468139 is an equidigital number, since it uses as much as digits as its factorization.

468139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66884.

The product of its digits is 5184, while the sum is 31.

The square root of 468139 is about 684.2068400710. The cubic root of 468139 is about 77.6470465236.

The spelling of 468139 in words is "four hundred sixty-eight thousand, one hundred thirty-nine".