4022220440 has 64 divisors (see below), whose sum is σ = 10512452160. Its totient is φ = 1356433920.

The previous prime is 4022220439. The next prime is 4022220443. The reversal of 4022220440 is 440222204.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4022220443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100667 + ... + 134826.

It is an arithmetic number, because the mean of its divisors is an integer number (164257065).

Almost surely, 2^4022220440 is an apocalyptic number.

4022220440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4022220440 is an abundant number, since it is smaller than the sum of its proper divisors (6490231720).

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

4022220440 is a wasteful number, since it uses less digits than its factorization.

4022220440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235572 (or 235568 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

The square root of 4022220440 is about 63420.9779174052. The cubic root of 4022220440 is about 1590.3350216342.

Adding to 4022220440 its reverse (440222204), we get a palindrome (4462442644).

The spelling of 4022220440 in words is "four billion, twenty-two million, two hundred twenty thousand, four hundred forty".