898978459 has 4 divisors (see below), whose sum is σ = 899204104. Its totient is φ = 898752816.

The previous prime is 898978439. The next prime is 898978471. The reversal of 898978459 is 954879898.

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

It is a cyclic number.

It is not a de Polignac number, because 898978459 - 2²⁹ = 362107547 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 898978394 and 898978403.

It is not an unprimeable number, because it can be changed into a prime (898978439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106737 + ... + 114850.

It is an arithmetic number, because the mean of its divisors is an integer number (224801026).

Almost surely, 2^898978459 is an apocalyptic number.

898978459 is a deficient number, since it is larger than the sum of its proper divisors (225645).

898978459 is a wasteful number, since it uses less digits than its factorization.

898978459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225644.

The product of its digits is 52254720, while the sum is 67.

The square root of 898978459 is about 29982.9694826913. The cubic root of 898978459 is about 965.1239548326.

The spelling of 898978459 in words is "eight hundred ninety-eight million, nine hundred seventy-eight thousand, four hundred fifty-nine".