434404131989 has 2 divisors, whose sum is σ = 434404131990. Its totient is φ = 434404131988.

The previous prime is 434404131937. The next prime is 434404132013. The reversal of 434404131989 is 989131404434.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 338471459089 + 95932672900 = 581783^2 + 309730^2 .

It is a cyclic number.

It is not a de Polignac number, because 434404131989 - 2²⁴ = 434387354773 is a prime.

It is a super-2 number, since 2×434404131989² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (434404131919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 217202065994 + 217202065995.

It is an arithmetic number, because the mean of its divisors is an integer number (217202065995).

Almost surely, 2^434404131989 is an apocalyptic number.

It is an amenable number.

434404131989 is a deficient number, since it is larger than the sum of its proper divisors (1).

434404131989 is an equidigital number, since it uses as much as digits as its factorization.

434404131989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1492992, while the sum is 50.

The spelling of 434404131989 in words is "four hundred thirty-four billion, four hundred four million, one hundred thirty-one thousand, nine hundred eighty-nine".