87417033989 has 2 divisors, whose sum is σ = 87417033990. Its totient is φ = 87417033988.

The previous prime is 87417033983. The next prime is 87417034037. The reversal of 87417033989 is 98933071478.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50492337025 + 36924696964 = 224705^2 + 192158^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87417033989 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87417033983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43708516994 + 43708516995.

It is an arithmetic number, because the mean of its divisors is an integer number (43708516995).

Almost surely, 2^87417033989 is an apocalyptic number.

It is an amenable number.

87417033989 is a deficient number, since it is larger than the sum of its proper divisors (1).

87417033989 is an equidigital number, since it uses as much as digits as its factorization.

87417033989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9144576, while the sum is 59.

The spelling of 87417033989 in words is "eighty-seven billion, four hundred seventeen million, thirty-three thousand, nine hundred eighty-nine".