438666834 has 16 divisors (see below), whose sum is σ = 879941088. Its totient is φ = 145787712.

The previous prime is 438666821. The next prime is 438666841.

438666834 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106452 + ... + 110495.

It is an arithmetic number, because the mean of its divisors is an integer number (54996318).

Almost surely, 2^438666834 is an apocalyptic number.

438666834 is an abundant number, since it is smaller than the sum of its proper divisors (441274254).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

438666834 is a wasteful number, since it uses less digits than its factorization.

438666834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217289.

The product of its digits is 1990656, while the sum is 48.

The square root of 438666834 is about 20944.3747579153. The cubic root of 438666834 is about 759.8215381988.

The spelling of 438666834 in words is "four hundred thirty-eight million, six hundred sixty-six thousand, eight hundred thirty-four".