38905855 has 8 divisors (see below), whose sum is σ = 46854864. Its totient is φ = 31012800.

The previous prime is 38905847. The next prime is 38905859. The reversal of 38905855 is 55850983.

It is a happy number.

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

It is not a de Polignac number, because 38905855 - 2³ = 38905847 is a prime.

It is a super-3 number, since 3×38905855³ (a number of 24 digits) contains 333 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 (38905859) by changing a digit.

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, 12441 + ... + 15250.

It is an arithmetic number, because the mean of its divisors is an integer number (5856858).

Almost surely, 2^38905855 is an apocalyptic number.

38905855 is a deficient number, since it is larger than the sum of its proper divisors (7949009).

38905855 is a wasteful number, since it uses less digits than its factorization.

38905855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27977.

The product of its (nonzero) digits is 216000, while the sum is 43.

The square root of 38905855 is about 6237.4558114667. The cubic root of 38905855 is about 338.8480478518.

The spelling of 38905855 in words is "thirty-eight million, nine hundred five thousand, eight hundred fifty-five".