1438979811429 has 4 divisors (see below), whose sum is σ = 1918639748576. Its totient is φ = 959319874284.

The previous prime is 1438979811407. The next prime is 1438979811461. The reversal of 1438979811429 is 9241189798341.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1438979811429 - 2⁵ = 1438979811397 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1438979811429.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1438979812429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239829968569 + ... + 239829968574.

It is an arithmetic number, because the mean of its divisors is an integer number (479659937144).

Almost surely, 2^{1438979811429} is an apocalyptic number.

It is an amenable number.

1438979811429 is a deficient number, since it is larger than the sum of its proper divisors (479659937147).

1438979811429 is an equidigital number, since it uses as much as digits as its factorization.

1438979811429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479659937146.

The product of its digits is 31352832, while the sum is 66.

The spelling of 1438979811429 in words is "one trillion, four hundred thirty-eight billion, nine hundred seventy-nine million, eight hundred eleven thousand, four hundred twenty-nine".