9827780494 has 8 divisors (see below), whose sum is σ = 16847623728. Its totient is φ = 4211905920.

The previous prime is 9827780471. The next prime is 9827780503. The reversal of 9827780494 is 4940877289.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 350992147 + ... + 350992174.

It is an arithmetic number, because the mean of its divisors is an integer number (2105952966).

Almost surely, 2^9827780494 is an apocalyptic number.

9827780494 is a deficient number, since it is larger than the sum of its proper divisors (7019843234).

9827780494 is a wasteful number, since it uses less digits than its factorization.

9827780494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701984330.

The product of its (nonzero) digits is 8128512, while the sum is 58.

The square root of 9827780494 is about 99135.1627526782. The cubic root of 9827780494 is about 2141.9951473580.

It can be divided in two parts, 9827 and 780494, that added together give a square (790321 = 889²).

The spelling of 9827780494 in words is "nine billion, eight hundred twenty-seven million, seven hundred eighty thousand, four hundred ninety-four".