538942273 has 4 divisors (see below), whose sum is σ = 539131840. Its totient is φ = 538752708.

The previous prime is 538942267. The next prime is 538942291. The reversal of 538942273 is 372249835.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 372249835 = 5 ⋅74449967.

It is a cyclic number.

It is not a de Polignac number, because 538942273 - 2⁵ = 538942241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (538942073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90453 + ... + 96226.

It is an arithmetic number, because the mean of its divisors is an integer number (134782960).

Almost surely, 2^538942273 is an apocalyptic number.

It is an amenable number.

538942273 is a deficient number, since it is larger than the sum of its proper divisors (189567).

538942273 is a wasteful number, since it uses less digits than its factorization.

538942273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189566.

The product of its digits is 362880, while the sum is 43.

The square root of 538942273 is about 23215.1302602419. The cubic root of 538942273 is about 813.7932498959.

The spelling of 538942273 in words is "five hundred thirty-eight million, nine hundred forty-two thousand, two hundred seventy-three".