899639684371 has 2 divisors, whose sum is σ = 899639684372. Its totient is φ = 899639684370.

The previous prime is 899639684267. The next prime is 899639684413. The reversal of 899639684371 is 173486936998.

899639684371 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-899639684371 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 899639684294 and 899639684303.

It is not a weakly prime, because it can be changed into another prime (899639684071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 449819842185 + 449819842186.

It is an arithmetic number, because the mean of its divisors is an integer number (449819842186).

Almost surely, 2^899639684371 is an apocalyptic number.

899639684371 is a deficient number, since it is larger than the sum of its proper divisors (1).

899639684371 is an equidigital number, since it uses as much as digits as its factorization.

899639684371 is an evil number, because the sum of its binary digits is even.

The product of its digits is 423263232, while the sum is 73.

The spelling of 899639684371 in words is "eight hundred ninety-nine billion, six hundred thirty-nine million, six hundred eighty-four thousand, three hundred seventy-one".