628085239 has 2 divisors, whose sum is σ = 628085240. Its totient is φ = 628085238.

The previous prime is 628085233. The next prime is 628085303. The reversal of 628085239 is 932580826.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 628085239 - 2⁵ = 628085207 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 628085195 and 628085204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (628085233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314042619 + 314042620.

It is an arithmetic number, because the mean of its divisors is an integer number (314042620).

Almost surely, 2^628085239 is an apocalyptic number.

628085239 is a deficient number, since it is larger than the sum of its proper divisors (1).

628085239 is an equidigital number, since it uses as much as digits as its factorization.

628085239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 628085239 is about 25061.6288177764. The cubic root of 628085239 is about 856.3925139454.

It can be divided in two parts, 6280 and 85239, that added together give a palindrome (91519).

The spelling of 628085239 in words is "six hundred twenty-eight million, eighty-five thousand, two hundred thirty-nine".