709738 has 4 divisors (see below), whose sum is σ = 1064610. Its totient is φ = 354868.

The previous prime is 709729. The next prime is 709739. The reversal of 709738 is 837907.

709738 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 an emirpimes, since its reverse is a distinct semiprime: 837907 = 7 ⋅119701.

It can be written as a sum of positive squares in only one way, i.e., 635209 + 74529 = 797^2 + 273^2 .

It is not an unprimeable number, because it can be changed into a prime (709739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177433 + ... + 177436.

2⁷⁰⁹⁷³⁸ is an apocalyptic number.

709738 is a deficient number, since it is larger than the sum of its proper divisors (354872).

709738 is a wasteful number, since it uses less digits than its factorization.

709738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354871.

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 709738 is about 842.4594945753. The cubic root of 709738 is about 89.2002392963.

The spelling of 709738 in words is "seven hundred nine thousand, seven hundred thirty-eight".