87071293 has 2 divisors, whose sum is σ = 87071294. Its totient is φ = 87071292.

The previous prime is 87071287. The next prime is 87071381. The reversal of 87071293 is 39217078.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64432729 + 22638564 = 8027^2 + 4758^2 .

It is a cyclic number.

It is not a de Polignac number, because 87071293 - 2¹³ = 87063101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87071203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43535646 + 43535647.

It is an arithmetic number, because the mean of its divisors is an integer number (43535647).

Almost surely, 2^87071293 is an apocalyptic number.

It is an amenable number.

87071293 is a deficient number, since it is larger than the sum of its proper divisors (1).

87071293 is an equidigital number, since it uses as much as digits as its factorization.

87071293 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 87071293 is about 9331.1999764232. The cubic root of 87071293 is about 443.2257646320.

It can be divided in two parts, 8707 and 1293, that added together give a 4-th power (10000 = 10⁴).

The spelling of 87071293 in words is "eighty-seven million, seventy-one thousand, two hundred ninety-three".