739709 has 4 divisors (see below), whose sum is σ = 749916. Its totient is φ = 729504.

The previous prime is 739699. The next prime is 739723. The reversal of 739709 is 907937.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 907937 = 83 ⋅10939.

It can be written as a sum of positive squares in 2 ways, for example, as 511225 + 228484 = 715^2 + 478^2 .

It is a cyclic number.

It is not a de Polignac number, because 739709 - 2⁴ = 739693 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 (739759) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4994 + ... + 5139.

It is an arithmetic number, because the mean of its divisors is an integer number (187479).

2⁷³⁹⁷⁰⁹ is an apocalyptic number.

It is an amenable number.

739709 is a deficient number, since it is larger than the sum of its proper divisors (10207).

739709 is a wasteful number, since it uses less digits than its factorization.

739709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10206.

The product of its (nonzero) digits is 11907, while the sum is 35.

The square root of 739709 is about 860.0633697583. The cubic root of 739709 is about 90.4385590722.

The spelling of 739709 in words is "seven hundred thirty-nine thousand, seven hundred nine".