199822457 has 2 divisors, whose sum is σ = 199822458. Its totient is φ = 199822456.

The previous prime is 199822451. The next prime is 199822463. The reversal of 199822457 is 754228991.

It is a balanced prime because it is at equal distance from previous prime (199822451) and next prime (199822463).

It can be written as a sum of positive squares in only one way, i.e., 199261456 + 561001 = 14116^2 + 749^2 .

It is a cyclic number.

It is not a de Polignac number, because 199822457 - 2⁸ = 199822201 is a prime.

It is not a weakly prime, because it can be changed into another prime (199822451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99911228 + 99911229.

It is an arithmetic number, because the mean of its divisors is an integer number (99911229).

Almost surely, 2^199822457 is an apocalyptic number.

It is an amenable number.

199822457 is a deficient number, since it is larger than the sum of its proper divisors (1).

199822457 is an equidigital number, since it uses as much as digits as its factorization.

199822457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 47.

The square root of 199822457 is about 14135.8571370823. The cubic root of 199822457 is about 584.6304501183.

The spelling of 199822457 in words is "one hundred ninety-nine million, eight hundred twenty-two thousand, four hundred fifty-seven".