214500405989 has 2 divisors, whose sum is σ = 214500405990. Its totient is φ = 214500405988.

The previous prime is 214500405971. The next prime is 214500406079. The reversal of 214500405989 is 989504005412.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 201406181089 + 13094224900 = 448783^2 + 114430^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-214500405989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (214500485989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107250202994 + 107250202995.

It is an arithmetic number, because the mean of its divisors is an integer number (107250202995).

Almost surely, 2^214500405989 is an apocalyptic number.

It is an amenable number.

214500405989 is a deficient number, since it is larger than the sum of its proper divisors (1).

214500405989 is an equidigital number, since it uses as much as digits as its factorization.

214500405989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 518400, while the sum is 47.

The spelling of 214500405989 in words is "two hundred fourteen billion, five hundred million, four hundred five thousand, nine hundred eighty-nine".