538447 has 16 divisors (see below), whose sum is σ = 680512. Its totient is φ = 414720.

The previous prime is 538423. The next prime is 538457. The reversal of 538447 is 744835.

It is a cyclic number.

It is not a de Polignac number, because 538447 - 2¹¹ = 536399 is a prime.

538447 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5503 + ... + 5599.

It is an arithmetic number, because the mean of its divisors is an integer number (42532).

2⁵³⁸⁴⁴⁷ is an apocalyptic number.

538447 is a deficient number, since it is larger than the sum of its proper divisors (142065).

538447 is a wasteful number, since it uses less digits than its factorization.

538447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178.

The product of its digits is 13440, while the sum is 31.

The square root of 538447 is about 733.7894793468. The cubic root of 538447 is about 81.3543889020.

The spelling of 538447 in words is "five hundred thirty-eight thousand, four hundred forty-seven".