495991049 has 2 divisors, whose sum is σ = 495991050. Its totient is φ = 495991048.

The previous prime is 495991009. The next prime is 495991081. The reversal of 495991049 is 940199594.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 494261824 + 1729225 = 22232^2 + 1315^2 .

It is a cyclic number.

It is not a de Polignac number, because 495991049 - 2²⁰ = 494942473 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 495990988 and 495991006.

It is not a weakly prime, because it can be changed into another prime (495991009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247995524 + 247995525.

It is an arithmetic number, because the mean of its divisors is an integer number (247995525).

Almost surely, 2^495991049 is an apocalyptic number.

It is an amenable number.

495991049 is a deficient number, since it is larger than the sum of its proper divisors (1).

495991049 is an equidigital number, since it uses as much as digits as its factorization.

495991049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 524880, while the sum is 50.

The square root of 495991049 is about 22270.8564945311. The cubic root of 495991049 is about 791.5735602021.

The spelling of 495991049 in words is "four hundred ninety-five million, nine hundred ninety-one thousand, forty-nine".