538942289 has 4 divisors (see below), whose sum is σ = 539220480. Its totient is φ = 538664100.

The previous prime is 538942267. The next prime is 538942291. The reversal of 538942289 is 982249835.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-538942289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (538942889) 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, 136169 + ... + 140070.

It is an arithmetic number, because the mean of its divisors is an integer number (134805120).

Almost surely, 2^538942289 is an apocalyptic number.

It is an amenable number.

538942289 is a deficient number, since it is larger than the sum of its proper divisors (278191).

538942289 is a wasteful number, since it uses less digits than its factorization.

538942289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278190.

The product of its digits is 1244160, while the sum is 50.

The square root of 538942289 is about 23215.1306048448. The cubic root of 538942289 is about 813.7932579491.

The spelling of 538942289 in words is "five hundred thirty-eight million, nine hundred forty-two thousand, two hundred eighty-nine".