88687289 has 2 divisors, whose sum is σ = 88687290. Its totient is φ = 88687288.

The previous prime is 88687213. The next prime is 88687337. The reversal of 88687289 is 98278688.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87703225 + 984064 = 9365^2 + 992^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-88687289 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (88687789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44343644 + 44343645.

It is an arithmetic number, because the mean of its divisors is an integer number (44343645).

Almost surely, 2^88687289 is an apocalyptic number.

It is an amenable number.

88687289 is a deficient number, since it is larger than the sum of its proper divisors (1).

88687289 is an equidigital number, since it uses as much as digits as its factorization.

88687289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3096576, while the sum is 56.

The square root of 88687289 is about 9417.3928982495. The cubic root of 88687289 is about 445.9509839756.

The spelling of 88687289 in words is "eighty-eight million, six hundred eighty-seven thousand, two hundred eighty-nine".