709479 has 20 divisors (see below), whose sum is σ = 1118040. Its totient is φ = 447120.

The previous prime is 709469. The next prime is 709507. The reversal of 709479 is 974907.

It is not a de Polignac number, because 709479 - 2⁵ = 709447 is a prime.

It is an Ulam number.

709479 is a lucky number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 709479.

It is not an unprimeable number, because it can be changed into a prime (709409) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1309 + ... + 1769.

It is an arithmetic number, because the mean of its divisors is an integer number (55902).

2⁷⁰⁹⁴⁷⁹ is an apocalyptic number.

709479 is a deficient number, since it is larger than the sum of its proper divisors (408561).

709479 is a wasteful number, since it uses less digits than its factorization.

709479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492 (or 483 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 36.

The square root of 709479 is about 842.3057639599. The cubic root of 709479 is about 89.1893875582.

The spelling of 709479 in words is "seven hundred nine thousand, four hundred seventy-nine".