88905689 has 2 divisors, whose sum is σ = 88905690. Its totient is φ = 88905688.

The previous prime is 88905683. The next prime is 88905697. The reversal of 88905689 is 98650988.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56130064 + 32775625 = 7492^2 + 5725^2 .

It is a cyclic number.

It is not a de Polignac number, because 88905689 - 2⁴ = 88905673 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 88905689.

It is not a weakly prime, because it can be changed into another prime (88905683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44452844 + 44452845.

It is an arithmetic number, because the mean of its divisors is an integer number (44452845).

Almost surely, 2^88905689 is an apocalyptic number.

It is an amenable number.

88905689 is a deficient number, since it is larger than the sum of its proper divisors (1).

88905689 is an equidigital number, since it uses as much as digits as its factorization.

88905689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1244160, while the sum is 53.

The square root of 88905689 is about 9428.9813341633. The cubic root of 88905689 is about 446.3167479868.

The spelling of 88905689 in words is "eighty-eight million, nine hundred five thousand, six hundred eighty-nine".