499699 has 4 divisors (see below), whose sum is σ = 516960. Its totient is φ = 482440.

The previous prime is 499693. The next prime is 499711. The reversal of 499699 is 996994.

499699 = 117² + 118² + ... + 145².

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 996994 = 2 ⋅498497.

It is a cyclic number.

It is not a de Polignac number, because 499699 - 2³ = 499691 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2 and base 5.

It is not an unprimeable number, because it can be changed into a prime (499691) 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, 8587 + ... + 8644.

It is an arithmetic number, because the mean of its divisors is an integer number (129240).

2⁴⁹⁹⁶⁹⁹ is an apocalyptic number.

499699 is a deficient number, since it is larger than the sum of its proper divisors (17261).

499699 is a wasteful number, since it uses less digits than its factorization.

499699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17260.

The product of its digits is 157464, while the sum is 46.

The square root of 499699 is about 706.8939100035. The cubic root of 499699 is about 79.3541224774.

The spelling of 499699 in words is "four hundred ninety-nine thousand, six hundred ninety-nine".