498989 has 2 divisors, whose sum is σ = 498990. Its totient is φ = 498988.

The previous prime is 498977. The next prime is 499021. The reversal of 498989 is 989894.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 280900 + 218089 = 530^2 + 467^2 .

It is a cyclic number.

It is not a de Polignac number, because 498989 - 2⁴ = 498973 is a prime.

It is a Chen prime.

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

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (498089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249494 + 249495.

It is an arithmetic number, because the mean of its divisors is an integer number (249495).

2⁴⁹⁸⁹⁸⁹ is an apocalyptic number.

It is an amenable number.

498989 is a deficient number, since it is larger than the sum of its proper divisors (1).

498989 is an equidigital number, since it uses as much as digits as its factorization.

498989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 186624, while the sum is 47.

The square root of 498989 is about 706.3915344906. The cubic root of 498989 is about 79.3165210865.

The spelling of 498989 in words is "four hundred ninety-eight thousand, nine hundred eighty-nine".