538039906 has 8 divisors (see below), whose sum is σ = 833094144. Its totient is φ = 260341860.

The previous prime is 538039889. The next prime is 538039921. The reversal of 538039906 is 609930835.

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 4338970 + ... + 4339093.

It is an arithmetic number, because the mean of its divisors is an integer number (104136768).

Almost surely, 2^538039906 is an apocalyptic number.

538039906 is a deficient number, since it is larger than the sum of its proper divisors (295054238).

538039906 is a wasteful number, since it uses less digits than its factorization.

538039906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8678096.

The product of its (nonzero) digits is 174960, while the sum is 43.

The square root of 538039906 is about 23195.6872284483. The cubic root of 538039906 is about 813.3388101321.

The spelling of 538039906 in words is "five hundred thirty-eight million, thirty-nine thousand, nine hundred six".