89109389 has 2 divisors, whose sum is σ = 89109390. Its totient is φ = 89109388.

The previous prime is 89109379. The next prime is 89109401. The reversal of 89109389 is 98390198.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56505289 + 32604100 = 7517^2 + 5710^2 .

It is a cyclic number.

It is not a de Polignac number, because 89109389 - 2¹² = 89105293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89109379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44554694 + 44554695.

It is an arithmetic number, because the mean of its divisors is an integer number (44554695).

Almost surely, 2^89109389 is an apocalyptic number.

It is an amenable number.

89109389 is a deficient number, since it is larger than the sum of its proper divisors (1).

89109389 is an equidigital number, since it uses as much as digits as its factorization.

89109389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 139968, while the sum is 47.

The square root of 89109389 is about 9439.7769571108. The cubic root of 89109389 is about 446.6573537698.

It can be divided in two parts, 89109 and 389, that added together give a palindrome (89498).

The spelling of 89109389 in words is "eighty-nine million, one hundred nine thousand, three hundred eighty-nine".