40078037 has 4 divisors (see below), whose sum is σ = 40735116. Its totient is φ = 39420960.

The previous prime is 40078019. The next prime is 40078039. The reversal of 40078037 is 73087004.

40078037 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 can be written as a sum of positive squares in 2 ways, for example, as 12630916 + 27447121 = 3554^2 + 5239^2 .

It is a cyclic number.

It is not a de Polignac number, because 40078037 - 2²⁰ = 39029461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40078039) 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 3 ways as a sum of consecutive naturals, for example, 328448 + ... + 328569.

It is an arithmetic number, because the mean of its divisors is an integer number (10183779).

Almost surely, 2^40078037 is an apocalyptic number.

It is an amenable number.

40078037 is a deficient number, since it is larger than the sum of its proper divisors (657079).

40078037 is an equidigital number, since it uses as much as digits as its factorization.

40078037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657078.

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 40078037 is about 6330.7216808197. The cubic root of 40078037 is about 342.2174471834.

The spelling of 40078037 in words is "forty million, seventy-eight thousand, thirty-seven".