38909885 has 8 divisors (see below), whose sum is σ = 53362176. Its totient is φ = 26681040.

The previous prime is 38909881. The next prime is 38909911. The reversal of 38909885 is 58890983.

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

It is not a de Polignac number, because 38909885 - 2² = 38909881 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38909881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 555821 + ... + 555890.

It is an arithmetic number, because the mean of its divisors is an integer number (6670272).

Almost surely, 2^38909885 is an apocalyptic number.

38909885 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

38909885 is a deficient number, since it is larger than the sum of its proper divisors (14452291).

38909885 is a wasteful number, since it uses less digits than its factorization.

38909885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111723.

The product of its (nonzero) digits is 622080, while the sum is 50.

The square root of 38909885 is about 6237.7788514823. The cubic root of 38909885 is about 338.8597471233.

The spelling of 38909885 in words is "thirty-eight million, nine hundred nine thousand, eight hundred eighty-five".