40478038 has 4 divisors (see below), whose sum is σ = 60717060. Its totient is φ = 20239018.

The previous prime is 40478027. The next prime is 40478041. The reversal of 40478038 is 83087404.

40478038 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 40477994 and 40478012.

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 as a sum of consecutive naturals, namely, 10119508 + ... + 10119511.

It is an arithmetic number, because the mean of its divisors is an integer number (15179265).

Almost surely, 2^40478038 is an apocalyptic number.

40478038 is a deficient number, since it is larger than the sum of its proper divisors (20239022).

40478038 is a wasteful number, since it uses less digits than its factorization.

40478038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20239021.

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 40478038 is about 6362.2352990124. The cubic root of 40478038 is about 343.3521869392.

The spelling of 40478038 in words is "forty million, four hundred seventy-eight thousand, thirty-eight".