89405390187 has 6 divisors (see below), whose sum is σ = 129141119172. Its totient is φ = 59603593452.

The previous prime is 89405390167. The next prime is 89405390197. The reversal of 89405390187 is 78109350498.

89405390187 is a `hidden beast` number, since 8 + 94 + 0 + 539 + 0 + 18 + 7 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-89405390187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (89405390167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4966966113 + ... + 4966966130.

It is an arithmetic number, because the mean of its divisors is an integer number (21523519862).

Almost surely, 2^89405390187 is an apocalyptic number.

89405390187 is a deficient number, since it is larger than the sum of its proper divisors (39735728985).

89405390187 is a wasteful number, since it uses less digits than its factorization.

89405390187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9933932249 (or 9933932246 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 54.

The spelling of 89405390187 in words is "eighty-nine billion, four hundred five million, three hundred ninety thousand, one hundred eighty-seven".