38646489 has 16 divisors (see below), whose sum is σ = 59857280. Its totient is φ = 21720960.

The previous prime is 38646451. The next prime is 38646511. The reversal of 38646489 is 98464683.

It is not a de Polignac number, because 38646489 - 2⁹ = 38645977 is a prime.

It is a super-2 number, since 2×38646489² = 2987102224054242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (38645489) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13804 + ... + 16365.

It is an arithmetic number, because the mean of its divisors is an integer number (3741080).

Almost surely, 2^38646489 is an apocalyptic number.

It is an amenable number.

38646489 is a deficient number, since it is larger than the sum of its proper divisors (21210791).

38646489 is a wasteful number, since it uses less digits than its factorization.

38646489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30240.

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

The square root of 38646489 is about 6216.6300356383. The cubic root of 38646489 is about 338.0933912070.

The spelling of 38646489 in words is "thirty-eight million, six hundred forty-six thousand, four hundred eighty-nine".