723849 has 8 divisors (see below), whose sum is σ = 1103040. Its totient is φ = 413616.

The previous prime is 723839. The next prime is 723851. The reversal of 723849 is 948327.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 723849 - 2⁷ = 723721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (723829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17214 + ... + 17255.

It is an arithmetic number, because the mean of its divisors is an integer number (137880).

2⁷²³⁸⁴⁹ is an apocalyptic number.

It is an amenable number.

723849 is a deficient number, since it is larger than the sum of its proper divisors (379191).

723849 is a wasteful number, since it uses less digits than its factorization.

723849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34479.

The product of its digits is 12096, while the sum is 33.

The square root of 723849 is about 850.7931593519. The cubic root of 723849 is about 89.7875234608.

The spelling of 723849 in words is "seven hundred twenty-three thousand, eight hundred forty-nine".