40078385 has 8 divisors (see below), whose sum is σ = 48128256. Its totient is φ = 32039920.

The previous prime is 40078369. The next prime is 40078411. The reversal of 40078385 is 58387004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40078385 - 2⁴ = 40078369 is a prime.

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 11072 + ... + 14238.

It is an arithmetic number, because the mean of its divisors is an integer number (6016032).

Almost surely, 2^40078385 is an apocalyptic number.

It is an amenable number.

40078385 is a deficient number, since it is larger than the sum of its proper divisors (8049871).

40078385 is a wasteful number, since it uses less digits than its factorization.

40078385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5703.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 40078385 is about 6330.7491657781. The cubic root of 40078385 is about 342.2184376787.

The spelling of 40078385 in words is "forty million, seventy-eight thousand, three hundred eighty-five".