40978087 has 2 divisors, whose sum is σ = 40978088. Its totient is φ = 40978086.

The previous prime is 40978061. The next prime is 40978123. The reversal of 40978087 is 78087904.

40978087 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40978087 is a prime.

It is a super-2 number, since 2×40978087² = 3358407228359138, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40978027) 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, 20489043 + 20489044.

It is an arithmetic number, because the mean of its divisors is an integer number (20489044).

Almost surely, 2^40978087 is an apocalyptic number.

40978087 is a deficient number, since it is larger than the sum of its proper divisors (1).

40978087 is an equidigital number, since it uses as much as digits as its factorization.

40978087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112896, while the sum is 43.

The square root of 40978087 is about 6401.4128909171. The cubic root of 40978087 is about 344.7602815587.

The spelling of 40978087 in words is "forty million, nine hundred seventy-eight thousand, eighty-seven".