499990 has 8 divisors (see below), whose sum is σ = 900000. Its totient is φ = 199992.

The previous prime is 499979. The next prime is 500009. The reversal of 499990 is 99994.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24990 + ... + 25009.

It is an arithmetic number, because the mean of its divisors is an integer number (112500).

2⁴⁹⁹⁹⁹⁰ is an apocalyptic number.

499990 is a deficient number, since it is larger than the sum of its proper divisors (400010).

499990 is a wasteful number, since it uses less digits than its factorization.

499990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50006.

The product of its (nonzero) digits is 26244, while the sum is 40.

The square root of 499990 is about 707.0997100834. The cubic root of 499990 is about 79.3695234612.

The spelling of 499990 in words is "four hundred ninety-nine thousand, nine hundred ninety".