723943 has 12 divisors (see below), whose sum is σ = 825664. Its totient is φ = 633600.

The previous prime is 723923. The next prime is 723949. The reversal of 723943 is 349327.

It is a de Polignac number, because none of the positive numbers 2^k-723943 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 (723949) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3655 + ... + 3847.

2⁷²³⁹⁴³ is an apocalyptic number.

723943 is a deficient number, since it is larger than the sum of its proper divisors (101721).

723943 is a wasteful number, since it uses less digits than its factorization.

723943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246 (or 235 counting only the distinct ones).

The product of its digits is 4536, while the sum is 28.

The square root of 723943 is about 850.8484001278. The cubic root of 723943 is about 89.7914099352.

The spelling of 723943 in words is "seven hundred twenty-three thousand, nine hundred forty-three".