438461436 has 48 divisors (see below), whose sum is σ = 1176713216. Its totient is φ = 124473024.

The previous prime is 438461417. The next prime is 438461477. The reversal of 438461436 is 634164834.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 438461394 and 438461403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3436 + ... + 29811.

Almost surely, 2^438461436 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 438461436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (588356608).

438461436 is an abundant number, since it is smaller than the sum of its proper divisors (738251780).

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

438461436 is a wasteful number, since it uses less digits than its factorization.

438461436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33418 (or 33416 counting only the distinct ones).

The product of its digits is 165888, while the sum is 39.

The square root of 438461436 is about 20939.4707669511. The cubic root of 438461436 is about 759.7029286779.

The spelling of 438461436 in words is "four hundred thirty-eight million, four hundred sixty-one thousand, four hundred thirty-six".