494219477 has 2 divisors, whose sum is σ = 494219478. Its totient is φ = 494219476.

The previous prime is 494219381. The next prime is 494219489. The reversal of 494219477 is 774912494.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 494217361 + 2116 = 22231^2 + 46^2 .

It is a cyclic number.

It is not a de Polignac number, because 494219477 - 2⁸ = 494219221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (494239477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247109738 + 247109739.

It is an arithmetic number, because the mean of its divisors is an integer number (247109739).

Almost surely, 2^494219477 is an apocalyptic number.

It is an amenable number.

494219477 is a deficient number, since it is larger than the sum of its proper divisors (1).

494219477 is an equidigital number, since it uses as much as digits as its factorization.

494219477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 508032, while the sum is 47.

The square root of 494219477 is about 22231.0475911505. The cubic root of 494219477 is about 790.6299931194.

The spelling of 494219477 in words is "four hundred ninety-four million, two hundred nineteen thousand, four hundred seventy-seven".