538433405 has 8 divisors (see below), whose sum is σ = 646245432. Its totient is φ = 430663168.

The previous prime is 538433353. The next prime is 538433417. The reversal of 538433405 is 504334835.

It can be written as a sum of positive squares in 4 ways, for example, as 11363641 + 527069764 = 3371^2 + 22958^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 538433405 - 2⁸ = 538433149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 40469 + ... + 52101.

It is an arithmetic number, because the mean of its divisors is an integer number (80780679).

Almost surely, 2^538433405 is an apocalyptic number.

It is an amenable number.

538433405 is a deficient number, since it is larger than the sum of its proper divisors (107812027).

538433405 is a wasteful number, since it uses less digits than its factorization.

538433405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20895.

The product of its (nonzero) digits is 86400, while the sum is 35.

The square root of 538433405 is about 23204.1678368348. The cubic root of 538433405 is about 813.5370420312.

The spelling of 538433405 in words is "five hundred thirty-eight million, four hundred thirty-three thousand, four hundred five".