40445222 has 4 divisors (see below), whose sum is σ = 60667836. Its totient is φ = 20222610.

The previous prime is 40445203. The next prime is 40445233. The reversal of 40445222 is 22254404.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10111304 + ... + 10111307.

It is an arithmetic number, because the mean of its divisors is an integer number (15166959).

Almost surely, 2^40445222 is an apocalyptic number.

40445222 is a deficient number, since it is larger than the sum of its proper divisors (20222614).

40445222 is a wasteful number, since it uses less digits than its factorization.

40445222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20222613.

The product of its (nonzero) digits is 2560, while the sum is 23.

The square root of 40445222 is about 6359.6558082965. The cubic root of 40445222 is about 343.2593753623.

Adding to 40445222 its reverse (22254404), we get a palindrome (62699626).

The spelling of 40445222 in words is "forty million, four hundred forty-five thousand, two hundred twenty-two".