1234444456789 has 16 divisors (see below), whose sum is σ = 1297454571072. Its totient is φ = 1173001713408.

The previous prime is 1234444456771. The next prime is 1234444456793. The reversal of 1234444456789 is 9876544444321.

It is a cyclic number.

It is not a de Polignac number, because 1234444456789 - 2¹³ = 1234444448597 is a prime.

It is a super-3 number, since 3×1234444456789³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1234444456759) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13881702 + ... + 13970344.

It is an arithmetic number, because the mean of its divisors is an integer number (81090910692).

Almost surely, 2^{1234444456789} is an apocalyptic number.

It is an amenable number.

1234444456789 is a deficient number, since it is larger than the sum of its proper divisors (63010114283).

1234444456789 is an equidigital number, since it uses as much as digits as its factorization.

1234444456789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97476.

The product of its digits is 92897280, while the sum is 61.

The spelling of 1234444456789 in words is "one trillion, two hundred thirty-four billion, four hundred forty-four million, four hundred fifty-six thousand, seven hundred eighty-nine".