4002222440 has 16 divisors (see below), whose sum is σ = 9005000580. Its totient is φ = 1600888960.

The previous prime is 4002222439. The next prime is 4002222457. The reversal of 4002222440 is 442222004.

It can be written as a sum of positive squares in 2 ways, for example, as 3521472964 + 480749476 = 59342^2 + 21926^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50027741 + ... + 50027820.

Almost surely, 2^4002222440 is an apocalyptic number.

4002222440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4002222440 is an abundant number, since it is smaller than the sum of its proper divisors (5002778140).

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

4002222440 is a wasteful number, since it uses less digits than its factorization.

4002222440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100055572 (or 100055568 counting only the distinct ones).

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

The square root of 4002222440 is about 63263.1206944457. The cubic root of 4002222440 is about 1587.6949895029.

Adding to 4002222440 its reverse (442222004), we get a palindrome (4444444444).

The spelling of 4002222440 in words is "four billion, two million, two hundred twenty-two thousand, four hundred forty".