1234444689 has 6 divisors (see below), whose sum is σ = 1783086786. Its totient is φ = 822963120.

The previous prime is 1234444667. The next prime is 1234444691. The reversal of 1234444689 is 9864444321.

1234444689 is a `hidden beast` number, since 123 + 4 + 4 + 446 + 89 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1121915025 + 112529664 = 33495^2 + 10608^2 .

It is not a de Polignac number, because 1234444689 - 2²³ = 1226056081 is a prime.

It is a super-3 number, since 3×1234444689³ (a number of 28 digits) contains 333 as substring.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (1234444639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 68580252 + ... + 68580269.

It is an arithmetic number, because the mean of its divisors is an integer number (297181131).

Almost surely, 2^1234444689 is an apocalyptic number.

It is an amenable number.

1234444689 is a deficient number, since it is larger than the sum of its proper divisors (548642097).

1234444689 is a wasteful number, since it uses less digits than its factorization.

1234444689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137160527 (or 137160524 counting only the distinct ones).

The product of its digits is 663552, while the sum is 45.

The square root of 1234444689 is about 35134.6650617307. The cubic root of 1234444689 is about 1072.7302936765.

The spelling of 1234444689 in words is "one billion, two hundred thirty-four million, four hundred forty-four thousand, six hundred eighty-nine".