87140413 has 2 divisors, whose sum is σ = 87140414. Its totient is φ = 87140412.

The previous prime is 87140407. The next prime is 87140467. The reversal of 87140413 is 31404178.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66145689 + 20994724 = 8133^2 + 4582^2 .

It is a cyclic number.

It is not a de Polignac number, because 87140413 - 2⁵ = 87140381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87140483) 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, 43570206 + 43570207.

It is an arithmetic number, because the mean of its divisors is an integer number (43570207).

Almost surely, 2^87140413 is an apocalyptic number.

It is an amenable number.

87140413 is a deficient number, since it is larger than the sum of its proper divisors (1).

87140413 is an equidigital number, since it uses as much as digits as its factorization.

87140413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 87140413 is about 9334.9029453980. The cubic root of 87140413 is about 443.3430159128.

The spelling of 87140413 in words is "eighty-seven million, one hundred forty thousand, four hundred thirteen".