494078517 has 6 divisors (see below), whose sum is σ = 713668982. Its totient is φ = 329385672.

The previous prime is 494078513. The next prime is 494078549. The reversal of 494078517 is 715870494.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 415915236 + 78163281 = 20394^2 + 8841^2 .

It is not a de Polignac number, because 494078517 - 2² = 494078513 is a prime.

It is a super-2 number, since 2×494078517² = 488227161921838578, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (494078513) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27448798 + ... + 27448815.

Almost surely, 2^494078517 is an apocalyptic number.

It is an amenable number.

494078517 is a deficient number, since it is larger than the sum of its proper divisors (219590465).

494078517 is a wasteful number, since it uses less digits than its factorization.

494078517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54897619 (or 54897616 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 45.

The square root of 494078517 is about 22227.8770241335. The cubic root of 494078517 is about 790.5548188252.

The spelling of 494078517 in words is "four hundred ninety-four million, seventy-eight thousand, five hundred seventeen".