40478392 has 8 divisors (see below), whose sum is σ = 75897000. Its totient is φ = 20239192.

The previous prime is 40478387. The next prime is 40478393. The reversal of 40478392 is 29387404.

It is a happy number.

40478392 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40478393) 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 as a sum of consecutive naturals, namely, 2529892 + ... + 2529907.

It is an arithmetic number, because the mean of its divisors is an integer number (9487125).

Almost surely, 2^40478392 is an apocalyptic number.

It is an amenable number.

40478392 is a deficient number, since it is larger than the sum of its proper divisors (35418608).

40478392 is a wasteful number, since it uses less digits than its factorization.

40478392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5059805 (or 5059801 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 40478392 is about 6362.2631193625. The cubic root of 40478392 is about 343.3531878632.

The spelling of 40478392 in words is "forty million, four hundred seventy-eight thousand, three hundred ninety-two".