434144323989 has 10 divisors (see below), whose sum is σ = 648536582870. Its totient is φ = 289429549272.

The previous prime is 434144323981. The next prime is 434144324017. The reversal of 434144323989 is 989323441434.

434144323989 is a `hidden beast` number, since 434 + 144 + 32 + 39 + 8 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 407056760100 + 27087563889 = 638010^2 + 164583^2 .

It is not a de Polignac number, because 434144323989 - 2³ = 434144323981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (434144323981) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2679903154 + ... + 2679903315.

It is an arithmetic number, because the mean of its divisors is an integer number (64853658287).

Almost surely, 2^434144323989 is an apocalyptic number.

It is an amenable number.

434144323989 is a deficient number, since it is larger than the sum of its proper divisors (214392258881).

434144323989 is an equidigital number, since it uses as much as digits as its factorization.

434144323989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5359806481 (or 5359806472 counting only the distinct ones).

The product of its digits is 8957952, while the sum is 54.

The spelling of 434144323989 in words is "four hundred thirty-four billion, one hundred forty-four million, three hundred twenty-three thousand, nine hundred eighty-nine".