677439029 has 2 divisors, whose sum is σ = 677439030. Its totient is φ = 677439028.

The previous prime is 677439019. The next prime is 677439041. The reversal of 677439029 is 920934776.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 372412804 + 305026225 = 19298^2 + 17465^2 .

It is a cyclic number.

It is not a de Polignac number, because 677439029 - 2⁴ = 677439013 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (677439019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338719514 + 338719515.

It is an arithmetic number, because the mean of its divisors is an integer number (338719515).

Almost surely, 2^677439029 is an apocalyptic number.

It is an amenable number.

677439029 is a deficient number, since it is larger than the sum of its proper divisors (1).

677439029 is an equidigital number, since it uses as much as digits as its factorization.

677439029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 571536, while the sum is 47.

The square root of 677439029 is about 26027.6589227691. The cubic root of 677439029 is about 878.2606090708.

The spelling of 677439029 in words is "six hundred seventy-seven million, four hundred thirty-nine thousand, twenty-nine".