87469117 has 2 divisors, whose sum is σ = 87469118. Its totient is φ = 87469116.

The previous prime is 87469051. The next prime is 87469163. The reversal of 87469117 is 71196478.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85858756 + 1610361 = 9266^2 + 1269^2 .

It is a cyclic number.

It is not a de Polignac number, because 87469117 - 2¹⁹ = 86944829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87469177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43734558 + 43734559.

It is an arithmetic number, because the mean of its divisors is an integer number (43734559).

Almost surely, 2^87469117 is an apocalyptic number.

It is an amenable number.

87469117 is a deficient number, since it is larger than the sum of its proper divisors (1).

87469117 is an equidigital number, since it uses as much as digits as its factorization.

87469117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84672, while the sum is 43.

The square root of 87469117 is about 9352.4925554635. The cubic root of 87469117 is about 443.8997639837.

The spelling of 87469117 in words is "eighty-seven million, four hundred sixty-nine thousand, one hundred seventeen".