494485421 has 2 divisors, whose sum is σ = 494485422. Its totient is φ = 494485420.

The previous prime is 494485417. The next prime is 494485451. The reversal of 494485421 is 124584494.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 307616521 + 186868900 = 17539^2 + 13670^2 .

It is a cyclic number.

It is not a de Polignac number, because 494485421 - 2² = 494485417 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (494485451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247242710 + 247242711.

It is an arithmetic number, because the mean of its divisors is an integer number (247242711).

Almost surely, 2^494485421 is an apocalyptic number.

It is an amenable number.

494485421 is a deficient number, since it is larger than the sum of its proper divisors (1).

494485421 is an equidigital number, since it uses as much as digits as its factorization.

494485421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 184320, while the sum is 41.

The square root of 494485421 is about 22237.0281512616. The cubic root of 494485421 is about 790.7717827555.

The spelling of 494485421 in words is "four hundred ninety-four million, four hundred eighty-five thousand, four hundred twenty-one".