38656449 has 24 divisors (see below), whose sum is σ = 62211240. Its totient is φ = 22966272.

The previous prime is 38656433. The next prime is 38656489. The reversal of 38656449 is 94465683.

38656449 is a `hidden beast` number, since 3 + 86 + 564 + 4 + 9 = 666.

38656449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 4223025 + 34433424 = 2055^2 + 5868^2 .

It is not a de Polignac number, because 38656449 - 2⁴ = 38656433 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (38656489) 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 23 ways as a sum of consecutive naturals, for example, 2304 + ... + 9089.

It is an arithmetic number, because the mean of its divisors is an integer number (2592135).

Almost surely, 2^38656449 is an apocalyptic number.

38656449 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

It is an amenable number.

38656449 is a deficient number, since it is larger than the sum of its proper divisors (23554791).

38656449 is a wasteful number, since it uses less digits than its factorization.

38656449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11441 (or 11438 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The square root of 38656449 is about 6217.4310611377. The cubic root of 38656449 is about 338.1224332668.

The spelling of 38656449 in words is "thirty-eight million, six hundred fifty-six thousand, four hundred forty-nine".