494289647 has 4 divisors (see below), whose sum is σ = 504806496. Its totient is φ = 483772800.

The previous prime is 494289629. The next prime is 494289673. The reversal of 494289647 is 746982494.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 494289647 - 2²² = 490095343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (494289247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5258354 + ... + 5258447.

It is an arithmetic number, because the mean of its divisors is an integer number (126201624).

Almost surely, 2^494289647 is an apocalyptic number.

494289647 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

494289647 is a deficient number, since it is larger than the sum of its proper divisors (10516849).

494289647 is a wasteful number, since it uses less digits than its factorization.

494289647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10516848.

The product of its digits is 3483648, while the sum is 53.

The square root of 494289647 is about 22232.6257333676. The cubic root of 494289647 is about 790.6674096140.

The spelling of 494289647 in words is "four hundred ninety-four million, two hundred eighty-nine thousand, six hundred forty-seven".