499971 has 4 divisors (see below), whose sum is σ = 666632. Its totient is φ = 333312.

The previous prime is 499969. The next prime is 499973. The reversal of 499971 is 179994.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (499969) and next prime (499973).

It is not a de Polignac number, because 499971 - 2¹ = 499969 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (499973) 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, 83326 + ... + 83331.

It is an arithmetic number, because the mean of its divisors is an integer number (166658).

2⁴⁹⁹⁹⁷¹ is an apocalyptic number.

499971 is a deficient number, since it is larger than the sum of its proper divisors (166661).

499971 is a wasteful number, since it uses less digits than its factorization.

499971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166660.

The product of its digits is 20412, while the sum is 39.

The square root of 499971 is about 707.0862747925. The cubic root of 499971 is about 79.3685180811.

The spelling of 499971 in words is "four hundred ninety-nine thousand, nine hundred seventy-one".