734009 has 4 divisors (see below), whose sum is σ = 777204. Its totient is φ = 690816.

The previous prime is 734003. The next prime is 734017. The reversal of 734009 is 900437.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 900437 = 631 ⋅1427.

It can be written as a sum of positive squares in 2 ways, for example, as 511225 + 222784 = 715^2 + 472^2 .

It is a cyclic number.

It is not a de Polignac number, because 734009 - 2⁸ = 733753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (734003) 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, 21572 + ... + 21605.

It is an arithmetic number, because the mean of its divisors is an integer number (194301).

2⁷³⁴⁰⁰⁹ is an apocalyptic number.

It is an amenable number.

734009 is a deficient number, since it is larger than the sum of its proper divisors (43195).

734009 is a wasteful number, since it uses less digits than its factorization.

734009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43194.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 734009 is about 856.7432520890. The cubic root of 734009 is about 90.2056613671.

The spelling of 734009 in words is "seven hundred thirty-four thousand, nine".