709138349 has 4 divisors (see below), whose sum is σ = 746461440. Its totient is φ = 671815260.

The previous prime is 709138343. The next prime is 709138351. The reversal of 709138349 is 943831907.

It is a happy number.

709138349 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 709138349 - 2²⁰ = 708089773 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 (709138343) 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, 18661517 + ... + 18661554.

It is an arithmetic number, because the mean of its divisors is an integer number (186615360).

Almost surely, 2^709138349 is an apocalyptic number.

It is an amenable number.

709138349 is a deficient number, since it is larger than the sum of its proper divisors (37323091).

709138349 is a wasteful number, since it uses less digits than its factorization.

709138349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37323090.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 709138349 is about 26629.6516875456. The cubic root of 709138349 is about 891.7511073534.

The spelling of 709138349 in words is "seven hundred nine million, one hundred thirty-eight thousand, three hundred forty-nine".