87413873 has 2 divisors, whose sum is σ = 87413874. Its totient is φ = 87413872.

The previous prime is 87413839. The next prime is 87413891. The reversal of 87413873 is 37831478.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68690944 + 18722929 = 8288^2 + 4327^2 .

It is a cyclic number.

It is not a de Polignac number, because 87413873 - 2¹⁴ = 87397489 is a prime.

It is a nialpdrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 87413873.

It is not a weakly prime, because it can be changed into another prime (87413173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43706936 + 43706937.

It is an arithmetic number, because the mean of its divisors is an integer number (43706937).

Almost surely, 2^87413873 is an apocalyptic number.

It is an amenable number.

87413873 is a deficient number, since it is larger than the sum of its proper divisors (1).

87413873 is an equidigital number, since it uses as much as digits as its factorization.

87413873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 112896, while the sum is 41.

The square root of 87413873 is about 9349.5386517197. The cubic root of 87413873 is about 443.8062911331.

The spelling of 87413873 in words is "eighty-seven million, four hundred thirteen thousand, eight hundred seventy-three".