38959866 has 40 divisors (see below), whose sum is σ = 95239584. Its totient is φ = 11805480.

The previous prime is 38959813. The next prime is 38959867. The reversal of 38959866 is 66895983.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (38959867) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 9150 + ... + 12713.

Almost surely, 2^38959866 is an apocalyptic number.

38959866 is an abundant number, since it is smaller than the sum of its proper divisors (56279718).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

38959866 is a wasteful number, since it uses less digits than its factorization.

38959866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21888 (or 21879 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 54.

The square root of 38959866 is about 6241.7838796293. The cubic root of 38959866 is about 339.0047771274.

The spelling of 38959866 in words is "thirty-eight million, nine hundred fifty-nine thousand, eight hundred sixty-six".