507739849 has 4 divisors (see below), whose sum is σ = 512233236. Its totient is φ = 503246464.

The previous prime is 507739847. The next prime is 507739871. The reversal of 507739849 is 948937705.

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

It can be written as a sum of positive squares in 2 ways, for example, as 232013824 + 275726025 = 15232^2 + 16605^2 .

It is a cyclic number.

It is not a de Polignac number, because 507739849 - 2¹ = 507739847 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 507739796 and 507739805.

It is not an unprimeable number, because it can be changed into a prime (507739847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2246524 + ... + 2246749.

It is an arithmetic number, because the mean of its divisors is an integer number (128058309).

Almost surely, 2^507739849 is an apocalyptic number.

It is an amenable number.

507739849 is a deficient number, since it is larger than the sum of its proper divisors (4493387).

507739849 is a wasteful number, since it uses less digits than its factorization.

507739849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4493386.

The product of its (nonzero) digits is 1905120, while the sum is 52.

The square root of 507739849 is about 22533.0834330324. The cubic root of 507739849 is about 797.7749887475.

The spelling of 507739849 in words is "five hundred seven million, seven hundred thirty-nine thousand, eight hundred forty-nine".