38978895 has 8 divisors (see below), whose sum is σ = 62366256. Its totient is φ = 20788736.

The previous prime is 38978827. The next prime is 38978921. The reversal of 38978895 is 59887983.

38978895 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 38978895 - 2¹² = 38974799 is a prime.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1299282 + ... + 1299311.

It is an arithmetic number, because the mean of its divisors is an integer number (7795782).

Almost surely, 2^38978895 is an apocalyptic number.

38978895 is a deficient number, since it is larger than the sum of its proper divisors (23387361).

38978895 is a wasteful number, since it uses less digits than its factorization.

38978895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2598601.

The product of its digits is 4354560, while the sum is 57.

The square root of 38978895 is about 6243.3080173895. The cubic root of 38978895 is about 339.0599610264.

The spelling of 38978895 in words is "thirty-eight million, nine hundred seventy-eight thousand, eight hundred ninety-five".