90938984860 has 24 divisors (see below), whose sum is σ = 193272737616. Its totient is φ = 35937333120.

The previous prime is 90938984819. The next prime is 90938984879. The reversal of 90938984860 is 6848983909.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 90938984792 and 90938984801.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27389601 + ... + 27392920.

It is an arithmetic number, because the mean of its divisors is an integer number (8053030734).

Almost surely, 2^90938984860 is an apocalyptic number.

It is an amenable number.

90938984860 is an abundant number, since it is smaller than the sum of its proper divisors (102333752756).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90938984860 is a wasteful number, since it uses less digits than its factorization.

90938984860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54782613 (or 54782611 counting only the distinct ones).

The product of its (nonzero) digits is 26873856, while the sum is 64.

The spelling of 90938984860 in words is "ninety billion, nine hundred thirty-eight million, nine hundred eighty-four thousand, eight hundred sixty".