4421780398 has 32 divisors (see below), whose sum is σ = 7780608000. Its totient is φ = 1845353664.

The previous prime is 4421780371. The next prime is 4421780413. The reversal of 4421780398 is 8930871244.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114058 + ... + 147826.

It is an arithmetic number, because the mean of its divisors is an integer number (243144000).

Almost surely, 2^4421780398 is an apocalyptic number.

4421780398 is a deficient number, since it is larger than the sum of its proper divisors (3358827602).

4421780398 is a wasteful number, since it uses less digits than its factorization.

4421780398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34024.

The product of its (nonzero) digits is 387072, while the sum is 46.

The square root of 4421780398 is about 66496.4690641541. The cubic root of 4421780398 is about 1641.3419016631.

The spelling of 4421780398 in words is "four billion, four hundred twenty-one million, seven hundred eighty thousand, three hundred ninety-eight".