669000499 has 2 divisors, whose sum is σ = 669000500. Its totient is φ = 669000498.

The previous prime is 669000463. The next prime is 669000509. The reversal of 669000499 is 994000966.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 669000499 - 2⁹ = 668999987 is a prime.

It is not a weakly prime, because it can be changed into another prime (669070499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334500249 + 334500250.

It is an arithmetic number, because the mean of its divisors is an integer number (334500250).

Almost surely, 2^669000499 is an apocalyptic number.

669000499 is a deficient number, since it is larger than the sum of its proper divisors (1).

669000499 is an equidigital number, since it uses as much as digits as its factorization.

669000499 is an evil number, because the sum of its binary digits is even.

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

The square root of 669000499 is about 25865.0439589806. The cubic root of 669000499 is about 874.5986726629.

The spelling of 669000499 in words is "six hundred sixty-nine million, four hundred ninety-nine", and thus it is an aban number.