87230389 has 2 divisors, whose sum is σ = 87230390. Its totient is φ = 87230388.

The previous prime is 87230369. The next prime is 87230393. The reversal of 87230389 is 98303278.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67782289 + 19448100 = 8233^2 + 4410^2 .

It is a cyclic number.

It is not a de Polignac number, because 87230389 - 2⁵ = 87230357 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87230309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43615194 + 43615195.

It is an arithmetic number, because the mean of its divisors is an integer number (43615195).

Almost surely, 2^87230389 is an apocalyptic number.

It is an amenable number.

87230389 is a deficient number, since it is larger than the sum of its proper divisors (1).

87230389 is an equidigital number, since it uses as much as digits as its factorization.

87230389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 87230389 is about 9339.7210343778. The cubic root of 87230389 is about 443.4955532881.

The spelling of 87230389 in words is "eighty-seven million, two hundred thirty thousand, three hundred eighty-nine".