899788013 has 2 divisors, whose sum is σ = 899788014. Its totient is φ = 899788012.

The previous prime is 899787979. The next prime is 899788031. The reversal of 899788013 is 310887998.

Together with next prime (899788031) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 895026889 + 4761124 = 29917^2 + 2182^2 .

It is a cyclic number.

It is not a de Polignac number, because 899788013 - 2⁶ = 899787949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (899788033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 449894006 + 449894007.

It is an arithmetic number, because the mean of its divisors is an integer number (449894007).

Almost surely, 2^899788013 is an apocalyptic number.

It is an amenable number.

899788013 is a deficient number, since it is larger than the sum of its proper divisors (1).

899788013 is an equidigital number, since it uses as much as digits as its factorization.

899788013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 870912, while the sum is 53.

The square root of 899788013 is about 29996.4666752603. The cubic root of 899788013 is about 965.4135745057.

The spelling of 899788013 in words is "eight hundred ninety-nine million, seven hundred eighty-eight thousand, thirteen".