3400723 has 4 divisors (see below), whose sum is σ = 3435880. Its totient is φ = 3365568.

The previous prime is 3400717. The next prime is 3400739. The reversal of 3400723 is 3270043.

3400723 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 3400723 - 2⁹ = 3400211 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3400723.

It is not an unprimeable number, because it can be changed into a prime (3400703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17433 + ... + 17626.

It is an arithmetic number, because the mean of its divisors is an integer number (858970).

Almost surely, 2^3400723 is an apocalyptic number.

3400723 is a deficient number, since it is larger than the sum of its proper divisors (35157).

3400723 is an equidigital number, since it uses as much as digits as its factorization.

3400723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35156.

The product of its (nonzero) digits is 504, while the sum is 19.

The square root of 3400723 is about 1844.1049319385. The cubic root of 3400723 is about 150.3801174062.

Adding to 3400723 its reverse (3270043), we get a palindrome (6670766).

The spelling of 3400723 in words is "three million, four hundred thousand, seven hundred twenty-three".