438089440 has 24 divisors (see below), whose sum is σ = 1034986680. Its totient is φ = 175235712.

The previous prime is 438089413. The next prime is 438089453. The reversal of 438089440 is 44980834.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 438089393 and 438089402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1368870 + ... + 1369189.

It is an arithmetic number, because the mean of its divisors is an integer number (43124445).

Almost surely, 2^438089440 is an apocalyptic number.

438089440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

438089440 is an abundant number, since it is smaller than the sum of its proper divisors (596897240).

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

438089440 is a wasteful number, since it uses less digits than its factorization.

438089440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2738074 (or 2738066 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 40.

The square root of 438089440 is about 20930.5862316372. The cubic root of 438089440 is about 759.4880208302.

The spelling of 438089440 in words is "four hundred thirty-eight million, eighty-nine thousand, four hundred forty".