438927971329 has 4 divisors (see below), whose sum is σ = 448266864384. Its totient is φ = 429589078276.

The previous prime is 438927971269. The next prime is 438927971353. The reversal of 438927971329 is 923179729834.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-438927971329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (438927971359) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4669446457 + ... + 4669446550.

It is an arithmetic number, because the mean of its divisors is an integer number (112066716096).

Almost surely, 2^438927971329 is an apocalyptic number.

It is an amenable number.

438927971329 is a deficient number, since it is larger than the sum of its proper divisors (9338893055).

438927971329 is an equidigital number, since it uses as much as digits as its factorization.

438927971329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9338893054.

The product of its digits is 41150592, while the sum is 64.

The spelling of 438927971329 in words is "four hundred thirty-eight billion, nine hundred twenty-seven million, nine hundred seventy-one thousand, three hundred twenty-nine".