538333407 has 24 divisors (see below), whose sum is σ = 827517600. Its totient is φ = 336061440.

The previous prime is 538333391. The next prime is 538333421. The reversal of 538333407 is 704333835.

It is a happy number.

It is not a de Polignac number, because 538333407 - 2⁴ = 538333391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538333447) 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 23 ways as a sum of consecutive naturals, for example, 21607 + ... + 39287.

It is an arithmetic number, because the mean of its divisors is an integer number (34479900).

Almost surely, 2^538333407 is an apocalyptic number.

538333407 is a deficient number, since it is larger than the sum of its proper divisors (289184193).

538333407 is a wasteful number, since it uses less digits than its factorization.

538333407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17903 (or 17900 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 36.

The square root of 538333407 is about 23202.0129945658. The cubic root of 538333407 is about 813.4866754720.

The spelling of 538333407 in words is "five hundred thirty-eight million, three hundred thirty-three thousand, four hundred seven".