4156055989 has 2 divisors, whose sum is σ = 4156055990. Its totient is φ = 4156055988.

The previous prime is 4156055987. The next prime is 4156056049. The reversal of 4156055989 is 9895506514.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3440760964 + 715295025 = 58658^2 + 26745^2 .

It is a cyclic number.

It is not a de Polignac number, because 4156055989 - 2¹ = 4156055987 is a prime.

Together with 4156055987, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4156055987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2078027994 + 2078027995.

It is an arithmetic number, because the mean of its divisors is an integer number (2078027995).

Almost surely, 2^4156055989 is an apocalyptic number.

It is an amenable number.

4156055989 is a deficient number, since it is larger than the sum of its proper divisors (1).

4156055989 is an equidigital number, since it uses as much as digits as its factorization.

4156055989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944000, while the sum is 52.

The square root of 4156055989 is about 64467.4800888014. The cubic root of 4156055989 is about 1607.7818803349.

The spelling of 4156055989 in words is "four billion, one hundred fifty-six million, fifty-five thousand, nine hundred eighty-nine".