538851917 has 4 divisors (see below), whose sum is σ = 538899360. Its totient is φ = 538804476.

The previous prime is 538851883. The next prime is 538851953. The reversal of 538851917 is 719158835.

It is a happy number.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 538851917 - 2¹⁸ = 538589773 is a prime.

It is a super-2 number, since 2×538851917² = 580722776909149778, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538851977) 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, 4538 + ... + 33140.

It is an arithmetic number, because the mean of its divisors is an integer number (134724840).

Almost surely, 2^538851917 is an apocalyptic number.

It is an amenable number.

538851917 is a deficient number, since it is larger than the sum of its proper divisors (47443).

538851917 is a wasteful number, since it uses less digits than its factorization.

538851917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47442.

The product of its digits is 302400, while the sum is 47.

The square root of 538851917 is about 23213.1841202365. The cubic root of 538851917 is about 813.7477687029.

The spelling of 538851917 in words is "five hundred thirty-eight million, eight hundred fifty-one thousand, nine hundred seventeen".