2220440197 has 8 divisors (see below), whose sum is σ = 2252611800. Its totient is φ = 2188316160.

The previous prime is 2220440191. The next prime is 2220440203. The reversal of 2220440197 is 7910440222.

It is an interprime number because it is at equal distance from previous prime (2220440191) and next prime (2220440203).

It can be written as a sum of positive squares in 4 ways, for example, as 7584516 + 2212855681 = 2754^2 + 47041^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2220440197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220440191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88179 + ... + 110527.

It is an arithmetic number, because the mean of its divisors is an integer number (281576475).

Almost surely, 2^2220440197 is an apocalyptic number.

It is an amenable number.

2220440197 is a deficient number, since it is larger than the sum of its proper divisors (32171603).

2220440197 is a wasteful number, since it uses less digits than its factorization.

2220440197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23783.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 2220440197 is about 47121.5470565218. The cubic root of 2220440197 is about 1304.6069674633.

The spelling of 2220440197 in words is "two billion, two hundred twenty million, four hundred forty thousand, one hundred ninety-seven".