4387385389 has 2 divisors, whose sum is σ = 4387385390. Its totient is φ = 4387385388.

The previous prime is 4387385333. The next prime is 4387385459. The reversal of 4387385389 is 9835837834.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3125928100 + 1261457289 = 55910^2 + 35517^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4387385389 is a prime.

It is a super-2 number, since 2×4387385389² = 38498301103221362642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4387385689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2193692694 + 2193692695.

It is an arithmetic number, because the mean of its divisors is an integer number (2193692695).

Almost surely, 2^4387385389 is an apocalyptic number.

It is an amenable number.

4387385389 is a deficient number, since it is larger than the sum of its proper divisors (1).

4387385389 is an equidigital number, since it uses as much as digits as its factorization.

4387385389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17418240, while the sum is 58.

The square root of 4387385389 is about 66237.3413491212. The cubic root of 4387385389 is about 1637.0750696949.

The spelling of 4387385389 in words is "four billion, three hundred eighty-seven million, three hundred eighty-five thousand, three hundred eighty-nine".