434839 has 2 divisors, whose sum is σ = 434840. Its totient is φ = 434838.

The previous prime is 434831. The next prime is 434849. The reversal of 434839 is 938434.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 434839 - 2³ = 434831 is a prime.

434839 is a lucky number.

It is a plaindrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 434839.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (434831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 217419 + 217420.

It is an arithmetic number, because the mean of its divisors is an integer number (217420).

2⁴³⁴⁸³⁹ is an apocalyptic number.

434839 is a deficient number, since it is larger than the sum of its proper divisors (1).

434839 is an equidigital number, since it uses as much as digits as its factorization.

434839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 31.

The square root of 434839 is about 659.4232328331. The cubic root of 434839 is about 75.7604995122.

It can be divided in two parts, 4 and 34839, that added together give a palindrome (34843).

The spelling of 434839 in words is "four hundred thirty-four thousand, eight hundred thirty-nine".