438747834 has 64 divisors (see below), whose sum is σ = 1030487040. Its totient is φ = 121927680.

The previous prime is 438747823. The next prime is 438747857.

438747834 is nontrivially palindromic in base 10.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 684154 + ... + 684794.

It is an arithmetic number, because the mean of its divisors is an integer number (16101360).

Almost surely, 2^438747834 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 438747834, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (515243520).

438747834 is an abundant number, since it is smaller than the sum of its proper divisors (591739206).

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

438747834 is a wasteful number, since it uses less digits than its factorization.

438747834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1075.

The product of its digits is 1806336, while the sum is 48.

The square root of 438747834 is about 20946.3083620957. The cubic root of 438747834 is about 759.8683024339.

The spelling of 438747834 in words is "four hundred thirty-eight million, seven hundred forty-seven thousand, eight hundred thirty-four".