38663955 has 48 divisors (see below), whose sum is σ = 76976640. Its totient is φ = 17755200.

The previous prime is 38663843. The next prime is 38663957. The reversal of 38663955 is 55936683.

38663955 is a `hidden beast` number, since 3 + 8 + 6 + 639 + 5 + 5 = 666.

It is not a de Polignac number, because 38663955 - 2⁷ = 38663827 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 38663955.

It is not an unprimeable number, because it can be changed into a prime (38663957) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7350 + ... + 11460.

It is an arithmetic number, because the mean of its divisors is an integer number (1603680).

Almost surely, 2^38663955 is an apocalyptic number.

38663955 is a deficient number, since it is larger than the sum of its proper divisors (38312685).

38663955 is a wasteful number, since it uses less digits than its factorization.

38663955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4152 (or 4149 counting only the distinct ones).

The product of its digits is 583200, while the sum is 45.

The square root of 38663955 is about 6218.0346573495. The cubic root of 38663955 is about 338.1443164868.

The spelling of 38663955 in words is "thirty-eight million, six hundred sixty-three thousand, nine hundred fifty-five".