438813880 has 16 divisors (see below), whose sum is σ = 987331320. Its totient is φ = 175525536.

The previous prime is 438813863. The next prime is 438813883. The reversal of 438813880 is 88318834.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438813883) 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, 5485134 + ... + 5485213.

Almost surely, 2^438813880 is an apocalyptic number.

438813880 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

438813880 is an abundant number, since it is smaller than the sum of its proper divisors (548517440).

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

438813880 is a wasteful number, since it uses less digits than its factorization.

438813880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10970358 (or 10970354 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 43.

The square root of 438813880 is about 20947.8848574265. The cubic root of 438813880 is about 759.9064289232.

The spelling of 438813880 in words is "four hundred thirty-eight million, eight hundred thirteen thousand, eight hundred eighty".