499669 has 2 divisors, whose sum is σ = 499670. Its totient is φ = 499668.

The previous prime is 499663. The next prime is 499673. The reversal of 499669 is 966994.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 286225 + 213444 = 535^2 + 462^2 .

It is a cyclic number.

It is not a de Polignac number, because 499669 - 2³ = 499661 is a prime.

It is a super-2 number, since 2×499669² = 499338219122, which contains 22 as substring.

499669 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (499661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249834 + 249835.

It is an arithmetic number, because the mean of its divisors is an integer number (249835).

2⁴⁹⁹⁶⁶⁹ is an apocalyptic number.

It is an amenable number.

499669 is a deficient number, since it is larger than the sum of its proper divisors (1).

499669 is an equidigital number, since it uses as much as digits as its factorization.

499669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 104976, while the sum is 43.

The square root of 499669 is about 706.8726900935. The cubic root of 499669 is about 79.3525344072.

The spelling of 499669 in words is "four hundred ninety-nine thousand, six hundred sixty-nine".