40144895 has 16 divisors (see below), whose sum is σ = 55368768. Its totient is φ = 27371520.

The previous prime is 40144883. The next prime is 40144901. The reversal of 40144895 is 59844104.

It is a happy number.

It is a Cunningham number, because it is equal to 6336²-1.

It is not a de Polignac number, because 40144895 - 2⁴ = 40144879 is a prime.

It is a super-2 number, since 2×40144895² = 3223225189122050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 3167 + ... + 9503.

It is an arithmetic number, because the mean of its divisors is an integer number (3460548).

Almost surely, 2^40144895 is an apocalyptic number.

40144895 is a deficient number, since it is larger than the sum of its proper divisors (15223873).

40144895 is a wasteful number, since it uses less digits than its factorization.

40144895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6530.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 40144895 is about 6335.9999210859. Note that the first 4 decimals coincide. The cubic root of 40144895 is about 342.4076366639.

Adding to 40144895 its reverse (59844104), we get a palindrome (99988999).

The spelling of 40144895 in words is "forty million, one hundred forty-four thousand, eight hundred ninety-five".