9719539923 has 16 divisors (see below), whose sum is σ = 13008038400. Its totient is φ = 6455414784.

The previous prime is 9719539883. The next prime is 9719539937. The reversal of 9719539923 is 3299359179.

It is not a de Polignac number, because 9719539923 - 2¹⁸ = 9719277779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9719539993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 898515 + ... + 909267.

It is an arithmetic number, because the mean of its divisors is an integer number (813002400).

Almost surely, 2^9719539923 is an apocalyptic number.

9719539923 is a deficient number, since it is larger than the sum of its proper divisors (3288498477).

9719539923 is a wasteful number, since it uses less digits than its factorization.

9719539923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11858.

The product of its digits is 4133430, while the sum is 57.

The square root of 9719539923 is about 98587.7270404385. The cubic root of 9719539923 is about 2134.1023104590.

The spelling of 9719539923 in words is "nine billion, seven hundred nineteen million, five hundred thirty-nine thousand, nine hundred twenty-three".