490278617 has 2 divisors, whose sum is σ = 490278618. Its totient is φ = 490278616.

The previous prime is 490278599. The next prime is 490278619. The reversal of 490278617 is 716872094.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 396169216 + 94109401 = 19904^2 + 9701^2 .

It is a cyclic number.

It is not a de Polignac number, because 490278617 - 2¹⁶ = 490213081 is a prime.

It is a super-3 number, since 3×490278617³ (a number of 27 digits) contains 333 as substring.

Together with 490278619, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (490278619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245139308 + 245139309.

It is an arithmetic number, because the mean of its divisors is an integer number (245139309).

Almost surely, 2^490278617 is an apocalyptic number.

It is an amenable number.

490278617 is a deficient number, since it is larger than the sum of its proper divisors (1).

490278617 is an equidigital number, since it uses as much as digits as its factorization.

490278617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 169344, while the sum is 44.

The square root of 490278617 is about 22142.2360433629. The cubic root of 490278617 is about 788.5229126676.

The spelling of 490278617 in words is "four hundred ninety million, two hundred seventy-eight thousand, six hundred seventeen".