398602089 has 6 divisors (see below), whose sum is σ = 575758586. Its totient is φ = 265734720.

The previous prime is 398602067. The next prime is 398602091. The reversal of 398602089 is 980206893.

398602089 is a `hidden beast` number, since 39 + 8 + 602 + 0 + 8 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 319694400 + 78907689 = 17880^2 + 8883^2 .

It is not a de Polignac number, because 398602089 - 2¹⁵ = 398569321 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (398202089) 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, 22144552 + ... + 22144569.

Almost surely, 2^398602089 is an apocalyptic number.

It is an amenable number.

398602089 is a deficient number, since it is larger than the sum of its proper divisors (177156497).

398602089 is a wasteful number, since it uses less digits than its factorization.

398602089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44289127 (or 44289124 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 398602089 is about 19965.0216378545. The cubic root of 398602089 is about 735.9469732049.

The spelling of 398602089 in words is "three hundred ninety-eight million, six hundred two thousand, eighty-nine".