899545 has 4 divisors (see below), whose sum is σ = 1079460. Its totient is φ = 719632.

The previous prime is 899537. The next prime is 899611. The reversal of 899545 is 545998.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 545998 = 2 ⋅272999.

It can be written as a sum of positive squares in 2 ways, for example, as 350464 + 549081 = 592^2 + 741^2 .

It is a cyclic number.

It is not a de Polignac number, because 899545 - 2³ = 899537 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 899498 and 899507.

It is an unprimeable number.

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, 89950 + ... + 89959.

It is an arithmetic number, because the mean of its divisors is an integer number (269865).

2⁸⁹⁹⁵⁴⁵ is an apocalyptic number.

It is an amenable number.

899545 is a deficient number, since it is larger than the sum of its proper divisors (179915).

899545 is a wasteful number, since it uses less digits than its factorization.

899545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179914.

The product of its digits is 64800, while the sum is 40.

The square root of 899545 is about 948.4434616781. The cubic root of 899545 is about 96.5326654339.

It can be divided in two parts, 899 and 545, that added together give a square (1444 = 38²).

The spelling of 899545 in words is "eight hundred ninety-nine thousand, five hundred forty-five".