87908243 has 2 divisors, whose sum is σ = 87908244. Its totient is φ = 87908242.

The previous prime is 87908239. The next prime is 87908273. The reversal of 87908243 is 34280978.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87908243 - 2² = 87908239 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87908243.

It is not a weakly prime, because it can be changed into another prime (87908203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43954121 + 43954122.

It is an arithmetic number, because the mean of its divisors is an integer number (43954122).

Almost surely, 2^87908243 is an apocalyptic number.

87908243 is a deficient number, since it is larger than the sum of its proper divisors (1).

87908243 is an equidigital number, since it uses as much as digits as its factorization.

87908243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 87908243 is about 9375.9395795835. The cubic root of 87908243 is about 444.6413690924.

The spelling of 87908243 in words is "eighty-seven million, nine hundred eight thousand, two hundred forty-three".