509348986 has 8 divisors (see below), whose sum is σ = 782658324. Its totient is φ = 248462880.

The previous prime is 509348981. The next prime is 509348989. The reversal of 509348986 is 689843905.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 507645961 + 1703025 = 22531^2 + 1305^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (509348981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3105705 + ... + 3105868.

Almost surely, 2^509348986 is an apocalyptic number.

509348986 is a deficient number, since it is larger than the sum of its proper divisors (273309338).

509348986 is a wasteful number, since it uses less digits than its factorization.

509348986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6211616.

The product of its (nonzero) digits is 1866240, while the sum is 52.

The square root of 509348986 is about 22568.7612863445. The cubic root of 509348986 is about 798.6168736216.

The spelling of 509348986 in words is "five hundred nine million, three hundred forty-eight thousand, nine hundred eighty-six".