38689669 has 4 divisors (see below), whose sum is σ = 38773696. Its totient is φ = 38605644.

The previous prime is 38689639. The next prime is 38689709. The reversal of 38689669 is 96698683.

38689669 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, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 96698683 = 239 ⋅404597.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38689669 is a prime.

It is a super-2 number, since 2×38689669² = 2993780974659122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38689639) 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 3 ways as a sum of consecutive naturals, for example, 41319 + ... + 42244.

It is an arithmetic number, because the mean of its divisors is an integer number (9693424).

Almost surely, 2^38689669 is an apocalyptic number.

It is an amenable number.

38689669 is a deficient number, since it is larger than the sum of its proper divisors (84027).

38689669 is an equidigital number, since it uses as much as digits as its factorization.

38689669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84026.

The product of its digits is 3359232, while the sum is 55.

The square root of 38689669 is about 6220.1020088098. The cubic root of 38689669 is about 338.2192623986.

The spelling of 38689669 in words is "thirty-eight million, six hundred eighty-nine thousand, six hundred sixty-nine".