739009 has 6 divisors (see below), whose sum is σ = 764610. Its totient is φ = 714240.

The previous prime is 739003. The next prime is 739021. The reversal of 739009 is 900937.

It can be written as a sum of positive squares in only one way, i.e., 600625 + 138384 = 775^2 + 372^2 .

It is not a de Polignac number, because 739009 - 2⁵ = 738977 is a prime.

It is a super-3 number, since 3×739009³ = 1210794493339733187, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (739003) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 577 + ... + 1345.

It is an arithmetic number, because the mean of its divisors is an integer number (127435).

2⁷³⁹⁰⁰⁹ is an apocalyptic number.

It is an amenable number.

739009 is a deficient number, since it is larger than the sum of its proper divisors (25601).

739009 is an equidigital number, since it uses as much as digits as its factorization.

739009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831 (or 800 counting only the distinct ones).

The product of its (nonzero) digits is 1701, while the sum is 28.

The square root of 739009 is about 859.6563266794. The cubic root of 739009 is about 90.4100221875.

The spelling of 739009 in words is "seven hundred thirty-nine thousand, nine".