89487787 has 2 divisors, whose sum is σ = 89487788. Its totient is φ = 89487786.

The previous prime is 89487781. The next prime is 89487857. The reversal of 89487787 is 78778498.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 89487787 - 2⁷ = 89487659 is a prime.

It is a plaindrome in base 16.

It is not a weakly prime, because it can be changed into another prime (89487781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44743893 + 44743894.

It is an arithmetic number, because the mean of its divisors is an integer number (44743894).

Almost surely, 2^89487787 is an apocalyptic number.

89487787 is a deficient number, since it is larger than the sum of its proper divisors (1).

89487787 is an equidigital number, since it uses as much as digits as its factorization.

89487787 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6322176, while the sum is 58.

The square root of 89487787 is about 9459.7984650837. The cubic root of 89487787 is about 447.2886960543.

The spelling of 89487787 in words is "eighty-nine million, four hundred eighty-seven thousand, seven hundred eighty-seven".