494989 has 8 divisors (see below), whose sum is σ = 571968. Its totient is φ = 423360.

The previous prime is 494987. The next prime is 495017. The reversal of 494989 is 989494.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 494989 - 2¹ = 494987 is a prime.

It is a super-2 number, since 2×494989² = 490028220242, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (494987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1137 + ... + 1510.

It is an arithmetic number, because the mean of its divisors is an integer number (71496).

2⁴⁹⁴⁹⁸⁹ is an apocalyptic number.

It is an amenable number.

494989 is a deficient number, since it is larger than the sum of its proper divisors (76979).

494989 is a wasteful number, since it uses less digits than its factorization.

494989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2675.

The product of its digits is 93312, while the sum is 43.

The square root of 494989 is about 703.5545465705. The cubic root of 494989 is about 79.1040129703.

It can be divided in two parts, 494 and 989, that multiplied together give a triangular number (488566 = T₉₈₈).

The spelling of 494989 in words is "four hundred ninety-four thousand, nine hundred eighty-nine".