538279647 has 4 divisors (see below), whose sum is σ = 717706200. Its totient is φ = 358853096.

The previous prime is 538279571. The next prime is 538279661. The reversal of 538279647 is 746972835.

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 538279647 - 2¹⁰ = 538278623 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 538279647.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538274647) 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, 89713272 + ... + 89713277.

It is an arithmetic number, because the mean of its divisors is an integer number (179426550).

Almost surely, 2^538279647 is an apocalyptic number.

538279647 is a deficient number, since it is larger than the sum of its proper divisors (179426553).

538279647 is a wasteful number, since it uses less digits than its factorization.

538279647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179426552.

The product of its digits is 2540160, while the sum is 51.

The square root of 538279647 is about 23200.8544454725. The cubic root of 538279647 is about 813.4595952903.

The spelling of 538279647 in words is "five hundred thirty-eight million, two hundred seventy-nine thousand, six hundred forty-seven".