888840013 has 2 divisors, whose sum is σ = 888840014. Its totient is φ = 888840012.

The previous prime is 888839999. The next prime is 888840031. The reversal of 888840013 is 310048888.

Together with next prime (888840031) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 877462884 + 11377129 = 29622^2 + 3373^2 .

It is a cyclic number.

It is not a de Polignac number, because 888840013 - 2¹³ = 888831821 is a prime.

It is equal to p_45468238 and since 888840013 and 45468238 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (888840413) 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, 444420006 + 444420007.

It is an arithmetic number, because the mean of its divisors is an integer number (444420007).

Almost surely, 2^888840013 is an apocalyptic number.

It is an amenable number.

888840013 is a deficient number, since it is larger than the sum of its proper divisors (1).

888840013 is an equidigital number, since it uses as much as digits as its factorization.

888840013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 49152, while the sum is 40.

The square root of 888840013 is about 29813.4200151542. The cubic root of 888840013 is about 961.4820904078.

The spelling of 888840013 in words is "eight hundred eighty-eight million, eight hundred forty thousand, thirteen".