40385015 has 8 divisors (see below), whose sum is σ = 52867728. Its totient is φ = 29370880.

The previous prime is 40385011. The next prime is 40385017. The reversal of 40385015 is 51058304.

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

It is not a de Polignac number, because 40385015 - 2² = 40385011 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 (40385011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 367082 + ... + 367191.

It is an arithmetic number, because the mean of its divisors is an integer number (6608466).

Almost surely, 2^40385015 is an apocalyptic number.

40385015 is a deficient number, since it is larger than the sum of its proper divisors (12482713).

40385015 is a wasteful number, since it uses less digits than its factorization.

40385015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 734289.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 40385015 is about 6354.9205345150. The cubic root of 40385015 is about 343.0889647880.

Subtracting 40385015 from its reverse (51058304), we obtain a square (10673289 = 3267²).

The spelling of 40385015 in words is "forty million, three hundred eighty-five thousand, fifteen".