87905387 has 2 divisors, whose sum is σ = 87905388. Its totient is φ = 87905386.

The previous prime is 87905371. The next prime is 87905401. The reversal of 87905387 is 78350978.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87905387 - 2⁴ = 87905371 is a prime.

It is not a weakly prime, because it can be changed into another prime (87905327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43952693 + 43952694.

It is an arithmetic number, because the mean of its divisors is an integer number (43952694).

Almost surely, 2^87905387 is an apocalyptic number.

87905387 is a deficient number, since it is larger than the sum of its proper divisors (1).

87905387 is an equidigital number, since it uses as much as digits as its factorization.

87905387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 423360, while the sum is 47.

The square root of 87905387 is about 9375.7872736107. The cubic root of 87905387 is about 444.6365538083.

The spelling of 87905387 in words is "eighty-seven million, nine hundred five thousand, three hundred eighty-seven".