898709 has 6 divisors (see below), whose sum is σ = 1045494. Its totient is φ = 770280.

The previous prime is 898691. The next prime is 898717. The reversal of 898709 is 907898.

It can be written as a sum of positive squares in only one way, i.e., 592900 + 305809 = 770^2 + 553^2 .

It is not a de Polignac number, because 898709 - 2¹² = 894613 is a prime.

It is an Ulam number.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (898769) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9122 + ... + 9219.

It is an arithmetic number, because the mean of its divisors is an integer number (174249).

2⁸⁹⁸⁷⁰⁹ is an apocalyptic number.

It is an amenable number.

898709 is a deficient number, since it is larger than the sum of its proper divisors (146785).

898709 is a wasteful number, since it uses less digits than its factorization.

898709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18355 (or 18348 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 41.

The square root of 898709 is about 948.0026371271. The cubic root of 898709 is about 96.5027516733.

The spelling of 898709 in words is "eight hundred ninety-eight thousand, seven hundred nine".