495998 has 4 divisors (see below), whose sum is σ = 744000. Its totient is φ = 247998.

The previous prime is 495983. The next prime is 496007. The reversal of 495998 is 899594.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 899594 = 2 ⋅449797.

It is a nialpdrome in base 14.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 495998.

It is an unprimeable number.

495998 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123998 + ... + 124001.

It is an arithmetic number, because the mean of its divisors is an integer number (186000).

2⁴⁹⁵⁹⁹⁸ is an apocalyptic number.

495998 is a deficient number, since it is larger than the sum of its proper divisors (248002).

495998 is a wasteful number, since it uses less digits than its factorization.

495998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248001.

The product of its digits is 116640, while the sum is 44.

The square root of 495998 is about 704.2712545603. The cubic root of 495998 is about 79.1577257985.

The spelling of 495998 in words is "four hundred ninety-five thousand, nine hundred ninety-eight".