709438 has 8 divisors (see below), whose sum is σ = 1093032. Its totient is φ = 345096.

The previous prime is 709433. The next prime is 709447. The reversal of 709438 is 834907.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (709433) 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, 4720 + ... + 4867.

It is an arithmetic number, because the mean of its divisors is an integer number (136629).

2⁷⁰⁹⁴³⁸ is an apocalyptic number.

709438 is a deficient number, since it is larger than the sum of its proper divisors (383594).

709438 is a wasteful number, since it uses less digits than its factorization.

709438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9626.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 709438 is about 842.2814256530. The cubic root of 709438 is about 89.1876694734.

The spelling of 709438 in words is "seven hundred nine thousand, four hundred thirty-eight".