438440467867 has 4 divisors (see below), whose sum is σ = 453559104720. Its totient is φ = 423321831016.

The previous prime is 438440467859. The next prime is 438440467891. The reversal of 438440467867 is 768764044834.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 438440467867 - 2³ = 438440467859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (438440467067) 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, 7559318383 + ... + 7559318440.

It is an arithmetic number, because the mean of its divisors is an integer number (113389776180).

Almost surely, 2^438440467867 is an apocalyptic number.

438440467867 is a deficient number, since it is larger than the sum of its proper divisors (15118636853).

438440467867 is a wasteful number, since it uses less digits than its factorization.

438440467867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15118636852.

The product of its (nonzero) digits is 86704128, while the sum is 61.

The spelling of 438440467867 in words is "four hundred thirty-eight billion, four hundred forty million, four hundred sixty-seven thousand, eight hundred sixty-seven".