40222222 has 8 divisors (see below), whose sum is σ = 60429096. Its totient is φ = 20079192.

The previous prime is 40222207. The next prime is 40222223. The reversal of 40222222 is 22222204.

It is a sphenic number, since it is the product of 3 distinct primes.

40222222 is a modest number, since divided by 22222 gives 402 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 40222196 and 40222205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40222223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14353 + ... + 16924.

It is an arithmetic number, because the mean of its divisors is an integer number (7553637).

Almost surely, 2^40222222 is an apocalyptic number.

40222222 is a deficient number, since it is larger than the sum of its proper divisors (20206874).

40222222 is a wasteful number, since it uses less digits than its factorization.

40222222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31922.

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 40222222 is about 6342.0991792939. The cubic root of 40222222 is about 342.6273439125.

Adding to 40222222 its reverse (22222204), we get a palindrome (62444426).

The spelling of 40222222 in words is "forty million, two hundred twenty-two thousand, two hundred twenty-two".