899869513 has 2 divisors, whose sum is σ = 899869514. Its totient is φ = 899869512.

The previous prime is 899869441. The next prime is 899869543. The reversal of 899869513 is 315968998.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 691269264 + 208600249 = 26292^2 + 14443^2 .

It is a cyclic number.

It is not a de Polignac number, because 899869513 - 2²⁵ = 866315081 is a prime.

It is not a weakly prime, because it can be changed into another prime (899869543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 449934756 + 449934757.

It is an arithmetic number, because the mean of its divisors is an integer number (449934757).

Almost surely, 2^899869513 is an apocalyptic number.

It is an amenable number.

899869513 is a deficient number, since it is larger than the sum of its proper divisors (1).

899869513 is an equidigital number, since it uses as much as digits as its factorization.

899869513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4199040, while the sum is 58.

The square root of 899869513 is about 29997.8251378329. The cubic root of 899869513 is about 965.4427216788.

It can be divided in two parts, 89986 and 9513, that added together give a palindrome (99499).

The spelling of 899869513 in words is "eight hundred ninety-nine million, eight hundred sixty-nine thousand, five hundred thirteen".