89517487 has 2 divisors, whose sum is σ = 89517488. Its totient is φ = 89517486.

The previous prime is 89517479. The next prime is 89517503. The reversal of 89517487 is 78471598.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 89517487 - 2³ = 89517479 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 89517487.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89517887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44758743 + 44758744.

It is an arithmetic number, because the mean of its divisors is an integer number (44758744).

Almost surely, 2^89517487 is an apocalyptic number.

89517487 is a deficient number, since it is larger than the sum of its proper divisors (1).

89517487 is an equidigital number, since it uses as much as digits as its factorization.

89517487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 564480, while the sum is 49.

The square root of 89517487 is about 9461.3681357402. The cubic root of 89517487 is about 447.3381739601.

The spelling of 89517487 in words is "eighty-nine million, five hundred seventeen thousand, four hundred eighty-seven".