89998439 has 2 divisors, whose sum is σ = 89998440. Its totient is φ = 89998438.

The previous prime is 89998429. The next prime is 89998453. The reversal of 89998439 is 93489998.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 89998439 - 2¹² = 89994343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89998429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44999219 + 44999220.

It is an arithmetic number, because the mean of its divisors is an integer number (44999220).

Almost surely, 2^89998439 is an apocalyptic number.

89998439 is a deficient number, since it is larger than the sum of its proper divisors (1).

89998439 is an equidigital number, since it uses as much as digits as its factorization.

89998439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5038848, while the sum is 59.

The square root of 89998439 is about 9486.7507082246. The cubic root of 89998439 is about 448.1378837249.

The spelling of 89998439 in words is "eighty-nine million, nine hundred ninety-eight thousand, four hundred thirty-nine".