40660222 has 8 divisors (see below), whose sum is σ = 62141256. Its totient is φ = 19946472.

The previous prime is 40660219. The next prime is 40660229. The reversal of 40660222 is 22206604.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 40660193 and 40660202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40660229) 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, 191688 + ... + 191899.

It is an arithmetic number, because the mean of its divisors is an integer number (7767657).

Almost surely, 2^40660222 is an apocalyptic number.

40660222 is a deficient number, since it is larger than the sum of its proper divisors (21481034).

40660222 is a wasteful number, since it uses less digits than its factorization.

40660222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383642.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 40660222 is about 6376.5368343639. The cubic root of 40660222 is about 343.8665371486.

Adding to 40660222 its reverse (22206604), we get a palindrome (62866826).

The spelling of 40660222 in words is "forty million, six hundred sixty thousand, two hundred twenty-two".