87486869 has 2 divisors, whose sum is σ = 87486870. Its totient is φ = 87486868.

The previous prime is 87486853. The next prime is 87486899. The reversal of 87486869 is 96868478.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85340644 + 2146225 = 9238^2 + 1465^2 .

It is a cyclic number.

It is not a de Polignac number, because 87486869 - 2⁴ = 87486853 is a prime.

It is a super-2 number, since 2×87486869² = 15307904494846322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87486899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43743434 + 43743435.

It is an arithmetic number, because the mean of its divisors is an integer number (43743435).

Almost surely, 2^87486869 is an apocalyptic number.

It is an amenable number.

87486869 is a deficient number, since it is larger than the sum of its proper divisors (1).

87486869 is an equidigital number, since it uses as much as digits as its factorization.

87486869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4644864, while the sum is 56.

The square root of 87486869 is about 9353.4415591268. The cubic root of 87486869 is about 443.9297920128.

The spelling of 87486869 in words is "eighty-seven million, four hundred eighty-six thousand, eight hundred sixty-nine".