2199999973 has 2 divisors, whose sum is σ = 2199999974. Its totient is φ = 2199999972.

The previous prime is 2199999961. The next prime is 2200000009. The reversal of 2199999973 is 3799999912.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2106626404 + 93373569 = 45898^2 + 9663^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2199999973 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2199999899 and 2199999908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2199993973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1099999986 + 1099999987.

It is an arithmetic number, because the mean of its divisors is an integer number (1099999987).

Almost surely, 2^2199999973 is an apocalyptic number.

It is an amenable number.

2199999973 is a deficient number, since it is larger than the sum of its proper divisors (1).

2199999973 is an equidigital number, since it uses as much as digits as its factorization.

2199999973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22320522, while the sum is 67.

The square root of 2199999973 is about 46904.1573104133. The cubic root of 2199999973 is about 1300.5914415308.

The spelling of 2199999973 in words is "two billion, one hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred seventy-three".