40144215 has 16 divisors (see below), whose sum is σ = 64476000. Its totient is φ = 21328512.

The previous prime is 40144183. The next prime is 40144229. The reversal of 40144215 is 51244104.

It is a happy number.

40144215 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40144215 - 2⁵ = 40144183 is a prime.

It is a super-2 number, since 2×40144215² = 3223115995932450, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40144191 and 40144200.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 940 + ... + 9009.

It is an arithmetic number, because the mean of its divisors is an integer number (4029750).

Almost surely, 2^40144215 is an apocalyptic number.

40144215 is a deficient number, since it is larger than the sum of its proper divisors (24331785).

40144215 is a wasteful number, since it uses less digits than its factorization.

40144215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10226.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 40144215 is about 6335.9462592418. The cubic root of 40144215 is about 342.4057033462.

Adding to 40144215 its reverse (51244104), we get a palindrome (91388319).

The spelling of 40144215 in words is "forty million, one hundred forty-four thousand, two hundred fifteen".