38668429 has 8 divisors (see below), whose sum is σ = 39514392. Its totient is φ = 37826880.

The previous prime is 38668417. The next prime is 38668433. The reversal of 38668429 is 92486683.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 562500 + 38105929 = 750^2 + 6173^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 38668429 - 2⁹ = 38667917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38668459) 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, 21447 + ... + 23179.

It is an arithmetic number, because the mean of its divisors is an integer number (4939299).

Almost surely, 2^38668429 is an apocalyptic number.

It is an amenable number.

38668429 is a deficient number, since it is larger than the sum of its proper divisors (845963).

38668429 is a wasteful number, since it uses less digits than its factorization.

38668429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2207.

The product of its digits is 497664, while the sum is 46.

The square root of 38668429 is about 6218.3944069189. The cubic root of 38668429 is about 338.1573587749.

The spelling of 38668429 in words is "thirty-eight million, six hundred sixty-eight thousand, four hundred twenty-nine".