38629966 has 12 divisors (see below), whose sum is σ = 58380696. Its totient is φ = 19170540.

The previous prime is 38629963. The next prime is 38629991. The reversal of 38629966 is 66992683.

38629966 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×38629966² = 2984548546322312, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38629963) 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 in 5 ways as a sum of consecutive naturals, for example, 142411 + ... + 142681.

It is an arithmetic number, because the mean of its divisors is an integer number (4865058).

Almost surely, 2^38629966 is an apocalyptic number.

38629966 is a deficient number, since it is larger than the sum of its proper divisors (19750730).

38629966 is an equidigital number, since it uses as much as digits as its factorization.

38629966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 807 (or 536 counting only the distinct ones).

The product of its digits is 839808, while the sum is 49.

The square root of 38629966 is about 6215.3009581194. The cubic root of 38629966 is about 338.0452012889.

The spelling of 38629966 in words is "thirty-eight million, six hundred twenty-nine thousand, nine hundred sixty-six".