38664489 has 4 divisors (see below), whose sum is σ = 51552656. Its totient is φ = 25776324.

The previous prime is 38664481. The next prime is 38664497. The reversal of 38664489 is 98446683.

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 an interprime number because it is at equal distance from previous prime (38664481) and next prime (38664497).

It is not a de Polignac number, because 38664489 - 2³ = 38664481 is a prime.

It is a super-2 number, since 2×38664489² = 2989885419262242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38664481) 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, 6444079 + ... + 6444084.

It is an arithmetic number, because the mean of its divisors is an integer number (12888164).

Almost surely, 2^38664489 is an apocalyptic number.

It is an amenable number.

38664489 is a deficient number, since it is larger than the sum of its proper divisors (12888167).

38664489 is a wasteful number, since it uses less digits than its factorization.

38664489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12888166.

The product of its digits is 995328, while the sum is 48.

The square root of 38664489 is about 6218.0775968140. The cubic root of 38664489 is about 338.1458732187.

The spelling of 38664489 in words is "thirty-eight million, six hundred sixty-four thousand, four hundred eighty-nine".