9999790 has 8 divisors (see below), whose sum is σ = 17999640. Its totient is φ = 3999912.

The previous prime is 9999761. The next prime is 9999823. The reversal of 9999790 is 979999.

9999790 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 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, 499980 + ... + 499999.

It is an arithmetic number, because the mean of its divisors is an integer number (2249955).

Almost surely, 2^9999790 is an apocalyptic number.

9999790 is a deficient number, since it is larger than the sum of its proper divisors (7999850).

9999790 is a wasteful number, since it uses less digits than its factorization.

9999790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 999986.

The product of its (nonzero) digits is 413343, while the sum is 52.

The square root of 9999790 is about 3162.2444560786. The cubic root of 9999790 is about 215.4419608883.

The spelling of 9999790 in words is "nine million, nine hundred ninety-nine thousand, seven hundred ninety".