709399 has 4 divisors (see below), whose sum is σ = 711360. Its totient is φ = 707440.

The previous prime is 709381. The next prime is 709409. The reversal of 709399 is 993907.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 709399 - 2⁷ = 709271 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 (709349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 262 + ... + 1219.

It is an arithmetic number, because the mean of its divisors is an integer number (177840).

2⁷⁰⁹³⁹⁹ is an apocalyptic number.

709399 is a deficient number, since it is larger than the sum of its proper divisors (1961).

709399 is a wasteful number, since it uses less digits than its factorization.

709399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1960.

The product of its (nonzero) digits is 15309, while the sum is 37.

The square root of 709399 is about 842.2582739279. The cubic root of 709399 is about 89.1860351361.

It can be divided in two parts, 7093 and 99, that multiplied together give a palindrome (702207).

The spelling of 709399 in words is "seven hundred nine thousand, three hundred ninety-nine".