5991923 has 4 divisors (see below), whose sum is σ = 6847920. Its totient is φ = 5135928.

The previous prime is 5991907. The next prime is 5991943. The reversal of 5991923 is 3291995.

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

It is not a de Polignac number, because 5991923 - 2⁴ = 5991907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5991943) 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, 427988 + ... + 428001.

It is an arithmetic number, because the mean of its divisors is an integer number (1711980).

Almost surely, 2^5991923 is an apocalyptic number.

5991923 is a deficient number, since it is larger than the sum of its proper divisors (855997).

5991923 is an equidigital number, since it uses as much as digits as its factorization.

5991923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 855996.

The product of its digits is 21870, while the sum is 38.

The square root of 5991923 is about 2447.8404768285. The cubic root of 5991923 is about 181.6304844288.

The spelling of 5991923 in words is "five million, nine hundred ninety-one thousand, nine hundred twenty-three".