9165997423 has 32 divisors (see below), whose sum is σ = 11161946880. Its totient is φ = 7418304000.

The previous prime is 9165997417. The next prime is 9165997427. The reversal of 9165997423 is 3247995619.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9165997423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9165997427) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2879893 + ... + 2883073.

It is an arithmetic number, because the mean of its divisors is an integer number (348810840).

Almost surely, 2^9165997423 is an apocalyptic number.

9165997423 is a deficient number, since it is larger than the sum of its proper divisors (1995949457).

9165997423 is a wasteful number, since it uses less digits than its factorization.

9165997423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4039.

The product of its digits is 3674160, while the sum is 55.

The square root of 9165997423 is about 95739.2157007775. The cubic root of 9165997423 is about 2092.7944597358.

The spelling of 9165997423 in words is "nine billion, one hundred sixty-five million, nine hundred ninety-seven thousand, four hundred twenty-three".