40422221997 has 8 divisors (see below), whose sum is σ = 54779842080. Its totient is φ = 26506374960.

The previous prime is 40422221981. The next prime is 40422222007. The reversal of 40422221997 is 79912222404.

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

It is not a de Polignac number, because 40422221997 - 2⁴ = 40422221981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40422221947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110443047 + ... + 110443412.

It is an arithmetic number, because the mean of its divisors is an integer number (6847480260).

Almost surely, 2^40422221997 is an apocalyptic number.

It is an amenable number.

40422221997 is a deficient number, since it is larger than the sum of its proper divisors (14357620083).

40422221997 is a wasteful number, since it uses less digits than its factorization.

40422221997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220886523.

The product of its (nonzero) digits is 145152, while the sum is 42.

The spelling of 40422221997 in words is "forty billion, four hundred twenty-two million, two hundred twenty-one thousand, nine hundred ninety-seven".