199240477 has 2 divisors, whose sum is σ = 199240478. Its totient is φ = 199240476.

The previous prime is 199240453. The next prime is 199240501. The reversal of 199240477 is 774042991.

199240477 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (199240453) and next prime (199240501).

It can be written as a sum of positive squares in only one way, i.e., 169494361 + 29746116 = 13019^2 + 5454^2 .

It is an emirp because it is prime and its reverse (774042991) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-199240477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199240417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99620238 + 99620239.

It is an arithmetic number, because the mean of its divisors is an integer number (99620239).

Almost surely, 2^199240477 is an apocalyptic number.

It is an amenable number.

199240477 is a deficient number, since it is larger than the sum of its proper divisors (1).

199240477 is an equidigital number, since it uses as much as digits as its factorization.

199240477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 127008, while the sum is 43.

The square root of 199240477 is about 14115.2568874959. The cubic root of 199240477 is about 584.0623223116.

The spelling of 199240477 in words is "one hundred ninety-nine million, two hundred forty thousand, four hundred seventy-seven".