798405489 has 48 divisors (see below), whose sum is σ = 1338480000. Its totient is φ = 449203968.

The previous prime is 798405407. The next prime is 798405511. The reversal of 798405489 is 984504897.

798405489 is a `hidden beast` number, since 7 + 98 + 4 + 0 + 548 + 9 = 666.

It is not a de Polignac number, because 798405489 - 2¹⁵ = 798372721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (798405089) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1599762 + ... + 1600260.

It is an arithmetic number, because the mean of its divisors is an integer number (27885000).

Almost surely, 2^798405489 is an apocalyptic number.

It is an amenable number.

798405489 is a deficient number, since it is larger than the sum of its proper divisors (540074511).

798405489 is a wasteful number, since it uses less digits than its factorization.

798405489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 854 (or 851 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The square root of 798405489 is about 28256.0699496586. The cubic root of 798405489 is about 927.7006011375.

The spelling of 798405489 in words is "seven hundred ninety-eight million, four hundred five thousand, four hundred eighty-nine".