9879790 has 8 divisors (see below), whose sum is σ = 17783640. Its totient is φ = 3951912.

The previous prime is 9879787. The next prime is 9879817. The reversal of 9879790 is 979789.

9879790 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×9879790² = 195220500888200, which contains 22 as substring.

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, 493980 + ... + 493999.

It is an arithmetic number, because the mean of its divisors is an integer number (2222955).

Almost surely, 2^9879790 is an apocalyptic number.

9879790 is a deficient number, since it is larger than the sum of its proper divisors (7903850).

9879790 is a wasteful number, since it uses less digits than its factorization.

9879790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 987986.

The product of its (nonzero) digits is 285768, while the sum is 49.

The square root of 9879790 is about 3143.2133239728. The cubic root of 9879790 is about 214.5767045637.

The spelling of 9879790 in words is "nine million, eight hundred seventy-nine thousand, seven hundred ninety".