9709923 has 4 divisors (see below), whose sum is σ = 12946568. Its totient is φ = 6473280.

The previous prime is 9709901. The next prime is 9709927. The reversal of 9709923 is 3299079.

9709923 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 9709923 - 2⁵ = 9709891 is a prime.

It is a Duffinian number.

9709923 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (9709927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1618318 + ... + 1618323.

It is an arithmetic number, because the mean of its divisors is an integer number (3236642).

Almost surely, 2^9709923 is an apocalyptic number.

9709923 is a deficient number, since it is larger than the sum of its proper divisors (3236645).

9709923 is a wasteful number, since it uses less digits than its factorization.

9709923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3236644.

The product of its (nonzero) digits is 30618, while the sum is 39.

The square root of 9709923 is about 3116.0749349141. The cubic root of 9709923 is about 213.3398221225.

The spelling of 9709923 in words is "nine million, seven hundred nine thousand, nine hundred twenty-three".