438927971269 has 2 divisors, whose sum is σ = 438927971270. Its totient is φ = 438927971268.

The previous prime is 438927971257. The next prime is 438927971353. The reversal of 438927971269 is 962179729834.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 429876922500 + 9051048769 = 655650^2 + 95137^2 .

It is a cyclic number.

It is not a de Polignac number, because 438927971269 - 2⁹ = 438927970757 is a prime.

It is a super-2 number, since 2×438927971269² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (438927971239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219463985634 + 219463985635.

It is an arithmetic number, because the mean of its divisors is an integer number (219463985635).

Almost surely, 2^438927971269 is an apocalyptic number.

It is an amenable number.

438927971269 is a deficient number, since it is larger than the sum of its proper divisors (1).

438927971269 is an equidigital number, since it uses as much as digits as its factorization.

438927971269 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82301184, while the sum is 67.

The spelling of 438927971269 in words is "four hundred thirty-eight billion, nine hundred twenty-seven million, nine hundred seventy-one thousand, two hundred sixty-nine".