40002222 has 16 divisors (see below), whose sum is σ = 86158800. Its totient is φ = 12308352.

The previous prime is 40002199. The next prime is 40002233. The reversal of 40002222 is 22220004.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 40002198 and 40002207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 256347 + ... + 256502.

It is an arithmetic number, because the mean of its divisors is an integer number (5384925).

Almost surely, 2^40002222 is an apocalyptic number.

40002222 is an abundant number, since it is smaller than the sum of its proper divisors (46156578).

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

40002222 is a wasteful number, since it uses less digits than its factorization.

40002222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512867.

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 40002222 is about 6324.7309824213. The cubic root of 40002222 is about 342.0015218290.

Adding to 40002222 its reverse (22220004), we get a palindrome (62222226).

The spelling of 40002222 in words is "forty million, two thousand, two hundred twenty-two".