499901 has 4 divisors (see below), whose sum is σ = 501600. Its totient is φ = 498204.

The previous prime is 499897. The next prime is 499903. The reversal of 499901 is 109994.

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 499901 - 2² = 499897 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

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 499901.

It is not an unprimeable number, because it can be changed into a prime (499903) 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 3 ways as a sum of consecutive naturals, for example, 281 + ... + 1038.

It is an arithmetic number, because the mean of its divisors is an integer number (125400).

2⁴⁹⁹⁹⁰¹ is an apocalyptic number.

It is an amenable number.

499901 is a deficient number, since it is larger than the sum of its proper divisors (1699).

499901 is a wasteful number, since it uses less digits than its factorization.

499901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1698.

The product of its (nonzero) digits is 2916, while the sum is 32.

The square root of 499901 is about 707.0367741497. The cubic root of 499901 is about 79.3648138292.

The spelling of 499901 in words is "four hundred ninety-nine thousand, nine hundred one".