612439 has 2 divisors, whose sum is σ = 612440. Its totient is φ = 612438.

The previous prime is 612407. The next prime is 612481. The reversal of 612439 is 934216.

612439 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 612439 - 2⁵ = 612407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (610439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306219 + 306220.

It is an arithmetic number, because the mean of its divisors is an integer number (306220).

2⁶¹²⁴³⁹ is an apocalyptic number.

612439 is a deficient number, since it is larger than the sum of its proper divisors (1).

612439 is an equidigital number, since it uses as much as digits as its factorization.

612439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 25.

The square root of 612439 is about 782.5848196841. The cubic root of 612439 is about 84.9221432408.

It can be divided in two parts, 61 and 2439, that added together give a square (2500 = 50²).

The spelling of 612439 in words is "six hundred twelve thousand, four hundred thirty-nine".