38391466 has 4 divisors (see below), whose sum is σ = 57587202. Its totient is φ = 19195732.

The previous prime is 38391461. The next prime is 38391481. The reversal of 38391466 is 66419383.

38391466 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 24216241 + 14175225 = 4921^2 + 3765^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (38391461) 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 as a sum of consecutive naturals, namely, 9597865 + ... + 9597868.

Almost surely, 2^38391466 is an apocalyptic number.

38391466 is a deficient number, since it is larger than the sum of its proper divisors (19195736).

38391466 is a wasteful number, since it uses less digits than its factorization.

38391466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19195735.

The product of its digits is 93312, while the sum is 40.

The square root of 38391466 is about 6196.0847315059. The cubic root of 38391466 is about 337.3480717191.

The spelling of 38391466 in words is "thirty-eight million, three hundred ninety-one thousand, four hundred sixty-six".