89910386782 has 16 divisors (see below), whose sum is σ = 136743013440. Its totient is φ = 44329652352.

The previous prime is 89910386779. The next prime is 89910386789. The reversal of 89910386782 is 28768301998.

It is a self number, because there is not a number n which added to its sum of digits gives 89910386782.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89910386789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 625323 + ... + 755545.

It is an arithmetic number, because the mean of its divisors is an integer number (8546438340).

Almost surely, 2^89910386782 is an apocalyptic number.

89910386782 is a deficient number, since it is larger than the sum of its proper divisors (46832626658).

89910386782 is a wasteful number, since it uses less digits than its factorization.

89910386782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135027.

The product of its (nonzero) digits is 10450944, while the sum is 61.

The spelling of 89910386782 in words is "eighty-nine billion, nine hundred ten million, three hundred eighty-six thousand, seven hundred eighty-two".