439343161920 has 672 divisors, whose sum is σ = 1688077497600. Its totient is φ = 107516657664.

The previous prime is 439343161883. The next prime is 439343161949. The reversal of 439343161920 is 29161343934.

It is a happy number.

439343161920 is a `hidden beast` number, since 4 + 3 + 9 + 3 + 4 + 3 + 1 + 619 + 20 = 666.

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, 281810101 + ... + 281811659.

Almost surely, 2^439343161920 is an apocalyptic number.

439343161920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 439343161920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (844038748800).

439343161920 is an abundant number, since it is smaller than the sum of its proper divisors (1248734335680).

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

439343161920 is a wasteful number, since it uses less digits than its factorization.

439343161920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1804 (or 1775 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 45.

The spelling of 439343161920 in words is "four hundred thirty-nine billion, three hundred forty-three million, one hundred sixty-one thousand, nine hundred twenty".