498997 has 4 divisors (see below), whose sum is σ = 525280. Its totient is φ = 472716.

The previous prime is 498989. The next prime is 499021. The reversal of 498997 is 799894.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 498997 - 2³ = 498989 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 (498907) 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, 13113 + ... + 13150.

It is an arithmetic number, because the mean of its divisors is an integer number (131320).

2⁴⁹⁸⁹⁹⁷ is an apocalyptic number.

It is an amenable number.

498997 is a deficient number, since it is larger than the sum of its proper divisors (26283).

498997 is a wasteful number, since it uses less digits than its factorization.

498997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26282.

The product of its digits is 163296, while the sum is 46.

The square root of 498997 is about 706.3971970499. The cubic root of 498997 is about 79.3169449628.

It can be divided in two parts, 498 and 997, that multiplied together give a triangular number (496506 = T₉₉₆).

The spelling of 498997 in words is "four hundred ninety-eight thousand, nine hundred ninety-seven".