899000669 has 4 divisors (see below), whose sum is σ = 1027429344. Its totient is φ = 770571996.

The previous prime is 899000657. The next prime is 899000671. The reversal of 899000669 is 966000998.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 966000998 = 2 ⋅483000499.

It is a cyclic number.

It is not a de Polignac number, because 899000669 - 2²⁸ = 630565213 is a prime.

It is a super-2 number, since 2×899000669² = 1616404405724895122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (899000629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64214327 + ... + 64214340.

It is an arithmetic number, because the mean of its divisors is an integer number (256857336).

Almost surely, 2^899000669 is an apocalyptic number.

It is an amenable number.

899000669 is a deficient number, since it is larger than the sum of its proper divisors (128428675).

899000669 is a wasteful number, since it uses less digits than its factorization.

899000669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128428674.

The product of its (nonzero) digits is 209952, while the sum is 47.

The square root of 899000669 is about 29983.3398573274. The cubic root of 899000669 is about 965.1319028267.

The spelling of 899000669 in words is "eight hundred ninety-nine million, six hundred sixty-nine", and thus it is an aban number.