4138669 has 4 divisors (see below), whose sum is σ = 4150944. Its totient is φ = 4126396.

The previous prime is 4138649. The next prime is 4138681. The reversal of 4138669 is 9668314.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4138669 - 2¹⁵ = 4105901 is a prime.

It is a super-2 number, since 2×4138669² = 34257162183122, which contains 22 as substring.

It is a Duffinian number.

4138669 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4138609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5617 + ... + 6310.

It is an arithmetic number, because the mean of its divisors is an integer number (1037736).

Almost surely, 2^4138669 is an apocalyptic number.

It is an amenable number.

4138669 is a deficient number, since it is larger than the sum of its proper divisors (12275).

4138669 is a wasteful number, since it uses less digits than its factorization.

4138669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12274.

The product of its digits is 31104, while the sum is 37.

The square root of 4138669 is about 2034.3718932388. The cubic root of 4138669 is about 160.5536678023.

The spelling of 4138669 in words is "four million, one hundred thirty-eight thousand, six hundred sixty-nine".