40075385 has 12 divisors (see below), whose sum is σ = 55942308. Its totient is φ = 27480096.

The previous prime is 40075379. The next prime is 40075393. The reversal of 40075385 is 58357004.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 8479744 + 31595641 = 2912^2 + 5621^2 .

It is not a de Polignac number, because 40075385 - 2⁴ = 40075369 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 81542 + ... + 82031.

It is an arithmetic number, because the mean of its divisors is an integer number (4661859).

Almost surely, 2^40075385 is an apocalyptic number.

It is an amenable number.

40075385 is a deficient number, since it is larger than the sum of its proper divisors (15866923).

40075385 is a wasteful number, since it uses less digits than its factorization.

40075385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163592 (or 163585 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 40075385 is about 6330.5122225615. The cubic root of 40075385 is about 342.2098987374.

The spelling of 40075385 in words is "forty million, seventy-five thousand, three hundred eighty-five".