38643269 has 4 divisors (see below), whose sum is σ = 44163744. Its totient is φ = 33122796.

The previous prime is 38643233. The next prime is 38643271. The reversal of 38643269 is 96234683.

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 not a de Polignac number, because 38643269 - 2²⁰ = 37594693 is a prime.

It is a super-2 number, since 2×38643269² = 2986604478012722, 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 (38643469) 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, 2760227 + ... + 2760240.

It is an arithmetic number, because the mean of its divisors is an integer number (11040936).

Almost surely, 2^38643269 is an apocalyptic number.

It is an amenable number.

38643269 is a deficient number, since it is larger than the sum of its proper divisors (5520475).

38643269 is an equidigital number, since it uses as much as digits as its factorization.

38643269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5520474.

The product of its digits is 186624, while the sum is 41.

The square root of 38643269 is about 6216.3710474842. The cubic root of 38643269 is about 338.0840010400.

The spelling of 38643269 in words is "thirty-eight million, six hundred forty-three thousand, two hundred sixty-nine".