40364985 has 32 divisors (see below), whose sum is σ = 66152448. Its totient is φ = 21012480.

The previous prime is 40364969. The next prime is 40364993. The reversal of 40364985 is 58946304.

It is not a de Polignac number, because 40364985 - 2⁴ = 40364969 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 209049 + ... + 209241.

It is an arithmetic number, because the mean of its divisors is an integer number (2067264).

Almost surely, 2^40364985 is an apocalyptic number.

It is an amenable number.

40364985 is a deficient number, since it is larger than the sum of its proper divisors (25787463).

40364985 is a wasteful number, since it uses less digits than its factorization.

40364985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465.

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 40364985 is about 6353.3443948837. The cubic root of 40364985 is about 343.0322341054.

The spelling of 40364985 in words is "forty million, three hundred sixty-four thousand, nine hundred eighty-five".