438934860 has 288 divisors, whose sum is σ = 1659420672. Its totient is φ = 91445760.

The previous prime is 438934843. The next prime is 438934919. The reversal of 438934860 is 68439834.

It is a super-2 number, since 2×438934860² = 385327622646439200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2080155 + ... + 2080365.

Almost surely, 2^438934860 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 438934860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (829710336).

438934860 is an abundant number, since it is smaller than the sum of its proper divisors (1220485812).

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

438934860 is a wasteful number, since it uses less digits than its factorization.

438934860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373 (or 368 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 45.

The square root of 438934860 is about 20950.7723008008. The cubic root of 438934860 is about 759.9762573377.

The spelling of 438934860 in words is "four hundred thirty-eight million, nine hundred thirty-four thousand, eight hundred sixty".