554139689 has 2 divisors, whose sum is σ = 554139690. Its totient is φ = 554139688.

The previous prime is 554139679. The next prime is 554139727. The reversal of 554139689 is 986931455.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 388760089 + 165379600 = 19717^2 + 12860^2 .

It is a cyclic number.

It is not a de Polignac number, because 554139689 - 2⁴ = 554139673 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (554139659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277069844 + 277069845.

It is an arithmetic number, because the mean of its divisors is an integer number (277069845).

Almost surely, 2^554139689 is an apocalyptic number.

It is an amenable number.

554139689 is a deficient number, since it is larger than the sum of its proper divisors (1).

554139689 is an equidigital number, since it uses as much as digits as its factorization.

554139689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1166400, while the sum is 50.

The square root of 554139689 is about 23540.1718133067. The cubic root of 554139689 is about 821.3717318877.

The spelling of 554139689 in words is "five hundred fifty-four million, one hundred thirty-nine thousand, six hundred eighty-nine".