438675973979 has 2 divisors, whose sum is σ = 438675973980. Its totient is φ = 438675973978.

The previous prime is 438675973973. The next prime is 438675973997. The reversal of 438675973979 is 979379576834.

Together with next prime (438675973997) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 438675973979 - 2²⁸ = 438407538523 is a prime.

It is a super-4 number, since 4×438675973979⁴ (a number of 48 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (438675973973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219337986989 + 219337986990.

It is an arithmetic number, because the mean of its divisors is an integer number (219337986990).

Almost surely, 2^438675973979 is an apocalyptic number.

438675973979 is a deficient number, since it is larger than the sum of its proper divisors (1).

438675973979 is an equidigital number, since it uses as much as digits as its factorization.

438675973979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160406080, while the sum is 77.

The spelling of 438675973979 in words is "four hundred thirty-eight billion, six hundred seventy-five million, nine hundred seventy-three thousand, nine hundred seventy-nine".