495139 has 2 divisors, whose sum is σ = 495140. Its totient is φ = 495138.

The previous prime is 495133. The next prime is 495149. The reversal of 495139 is 931594.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 495139 - 2¹³ = 486947 is a prime.

It is a Chen prime.

It is a nialpdrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 495139.

It is not a weakly prime, because it can be changed into another prime (495133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247569 + 247570.

It is an arithmetic number, because the mean of its divisors is an integer number (247570).

2⁴⁹⁵¹³⁹ is an apocalyptic number.

495139 is a deficient number, since it is larger than the sum of its proper divisors (1).

495139 is an equidigital number, since it uses as much as digits as its factorization.

495139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4860, while the sum is 31.

The square root of 495139 is about 703.6611400383. The cubic root of 495139 is about 79.1120026452.

The spelling of 495139 in words is "four hundred ninety-five thousand, one hundred thirty-nine".