494649 has 24 divisors (see below), whose sum is σ = 783432. Its totient is φ = 299520.

The previous prime is 494647. The next prime is 494651. The reversal of 494649 is 946494.

494649 is a `hidden beast` number, since 4 + 9 + 4 + 649 = 666.

494649 is nontrivially palindromic in base 8.

It is an interprime number because it is at equal distance from previous prime (494647) and next prime (494651).

It can be written as a sum of positive squares in 4 ways, for example, as 59049 + 435600 = 243^2 + 660^2 .

It is not a de Polignac number, because 494649 - 2¹ = 494647 is a prime.

It is not an unprimeable number, because it can be changed into a prime (494647) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8079 + ... + 8139.

It is an arithmetic number, because the mean of its divisors is an integer number (32643).

2⁴⁹⁴⁶⁴⁹ is an apocalyptic number.

It is an amenable number.

494649 is a deficient number, since it is larger than the sum of its proper divisors (288783).

494649 is a wasteful number, since it uses less digits than its factorization.

494649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137 (or 134 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 494649 is about 703.3128748999. The cubic root of 494649 is about 79.0858970629.

The spelling of 494649 in words is "four hundred ninety-four thousand, six hundred forty-nine".