508240709 has 6 divisors (see below), whose sum is σ = 536398470. Its totient is φ = 481490856.

The previous prime is 508240697. The next prime is 508240723. The reversal of 508240709 is 907042805.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 394221025 + 114019684 = 19855^2 + 10678^2 .

It is not a de Polignac number, because 508240709 - 2¹² = 508236613 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 (508240739) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 703574 + ... + 704295.

It is an arithmetic number, because the mean of its divisors is an integer number (89399745).

Almost surely, 2^508240709 is an apocalyptic number.

It is an amenable number.

508240709 is a deficient number, since it is larger than the sum of its proper divisors (28157761).

508240709 is a wasteful number, since it uses less digits than its factorization.

508240709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1407907 (or 1407888 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 508240709 is about 22544.1945742136. The cubic root of 508240709 is about 798.0372242651.

The spelling of 508240709 in words is "five hundred eight million, two hundred forty thousand, seven hundred nine".