9905766382 has 4 divisors (see below), whose sum is σ = 14858649576. Its totient is φ = 4952883190.

The previous prime is 9905766361. The next prime is 9905766421. The reversal of 9905766382 is 2836675099.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2836675099 = 73 ⋅38858563.

It is a super-2 number, since 2×9905766382² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2476441594 + ... + 2476441597.

It is an arithmetic number, because the mean of its divisors is an integer number (3714662394).

Almost surely, 2^9905766382 is an apocalyptic number.

9905766382 is a deficient number, since it is larger than the sum of its proper divisors (4952883194).

9905766382 is a wasteful number, since it uses less digits than its factorization.

9905766382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4952883193.

The product of its (nonzero) digits is 4898880, while the sum is 55.

The square root of 9905766382 is about 99527.7166521969. The cubic root of 9905766382 is about 2147.6459818283.

The spelling of 9905766382 in words is "nine billion, nine hundred five million, seven hundred sixty-six thousand, three hundred eighty-two".