4094219840 has 56 divisors (see below), whose sum is σ = 9780358392. Its totient is φ = 1632481280.

The previous prime is 4094219839. The next prime is 4094219849. The reversal of 4094219840 is 489124904.

It can be written as a sum of positive squares in 4 ways, for example, as 472105984 + 3622113856 = 21728^2 + 60184^2 .

It is not an unprimeable number, because it can be changed into a prime (4094219849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81260 + ... + 121620.

It is an arithmetic number, because the mean of its divisors is an integer number (174649257).

Almost surely, 2^4094219840 is an apocalyptic number.

4094219840 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 4094219840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4890179196).

4094219840 is an abundant number, since it is smaller than the sum of its proper divisors (5686138552).

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

4094219840 is a wasteful number, since it uses less digits than its factorization.

4094219840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40695 (or 40685 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 4094219840 is about 63986.0909885891. The cubic root of 4094219840 is about 1599.7681747456.

The spelling of 4094219840 in words is "four billion, ninety-four million, two hundred nineteen thousand, eight hundred forty".