87488449 has 2 divisors, whose sum is σ = 87488450. Its totient is φ = 87488448.

The previous prime is 87488441. The next prime is 87488491. The reversal of 87488449 is 94488478.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48650625 + 38837824 = 6975^2 + 6232^2 .

It is a cyclic number.

It is not a de Polignac number, because 87488449 - 2³ = 87488441 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87488396 and 87488405.

It is not a weakly prime, because it can be changed into another prime (87488441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43744224 + 43744225.

It is an arithmetic number, because the mean of its divisors is an integer number (43744225).

Almost surely, 2^87488449 is an apocalyptic number.

It is an amenable number.

87488449 is a deficient number, since it is larger than the sum of its proper divisors (1).

87488449 is an equidigital number, since it uses as much as digits as its factorization.

87488449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2064384, while the sum is 52.

The square root of 87488449 is about 9353.5260196356. The cubic root of 87488449 is about 443.9324644323.

The spelling of 87488449 in words is "eighty-seven million, four hundred eighty-eight thousand, four hundred forty-nine".