999239673 has 4 divisors (see below), whose sum is σ = 1332319568. Its totient is φ = 666159780.

The previous prime is 999239671. The next prime is 999239701. The reversal of 999239673 is 376932999.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 999239673 - 2¹ = 999239671 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (999239671) 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, 166539943 + ... + 166539948.

It is an arithmetic number, because the mean of its divisors is an integer number (333079892).

Almost surely, 2^999239673 is an apocalyptic number.

It is an amenable number.

999239673 is a deficient number, since it is larger than the sum of its proper divisors (333079895).

999239673 is a wasteful number, since it uses less digits than its factorization.

999239673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333079894.

The product of its digits is 4960116, while the sum is 57.

The square root of 999239673 is about 31610.7524902524. The cubic root of 999239673 is about 999.7464934065.

The spelling of 999239673 in words is "nine hundred ninety-nine million, two hundred thirty-nine thousand, six hundred seventy-three".