709438213 has 4 divisors (see below), whose sum is σ = 773932608. Its totient is φ = 644943820.

The previous prime is 709438201. The next prime is 709438217. The reversal of 709438213 is 312834907.

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 709438213 - 2⁵ = 709438181 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 (709438217) 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, 32247181 + ... + 32247202.

It is an arithmetic number, because the mean of its divisors is an integer number (193483152).

Almost surely, 2^709438213 is an apocalyptic number.

It is an amenable number.

709438213 is a deficient number, since it is larger than the sum of its proper divisors (64494395).

709438213 is a wasteful number, since it uses less digits than its factorization.

709438213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64494394.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 709438213 is about 26635.2813576279. The cubic root of 709438213 is about 891.8767839919.

The spelling of 709438213 in words is "seven hundred nine million, four hundred thirty-eight thousand, two hundred thirteen".