899699 has 4 divisors (see below), whose sum is σ = 904464. Its totient is φ = 894936.

The previous prime is 899693. The next prime is 899711. The reversal of 899699 is 996998.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-899699 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (899693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2087 + ... + 2480.

It is an arithmetic number, because the mean of its divisors is an integer number (226116).

2⁸⁹⁹⁶⁹⁹ is an apocalyptic number.

899699 is a deficient number, since it is larger than the sum of its proper divisors (4765).

899699 is a wasteful number, since it uses less digits than its factorization.

899699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4764.

The product of its digits is 314928, while the sum is 50.

The square root of 899699 is about 948.5246438549. The cubic root of 899699 is about 96.5381738417.

The spelling of 899699 in words is "eight hundred ninety-nine thousand, six hundred ninety-nine".