40402222 has 16 divisors (see below), whose sum is σ = 69949152. Its totient is φ = 17143200.

The previous prime is 40402177. The next prime is 40402253. The reversal of 40402222 is 22220404.

It is a junction number, because it is equal to n+sod(n) for n = 40402196 and 40402205.

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, 12873 + ... + 15700.

It is an arithmetic number, because the mean of its divisors is an integer number (4371822).

Almost surely, 2^40402222 is an apocalyptic number.

40402222 is a deficient number, since it is larger than the sum of its proper divisors (29546930).

40402222 is a wasteful number, since it uses less digits than its factorization.

40402222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28683.

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

The square root of 40402222 is about 6356.2742231594. The cubic root of 40402222 is about 343.1376849512.

Adding to 40402222 its reverse (22220404), we get a palindrome (62622626).

The spelling of 40402222 in words is "forty million, four hundred two thousand, two hundred twenty-two".