440240155 has 16 divisors (see below), whose sum is σ = 547174080. Its totient is φ = 339631488.

The previous prime is 440240153. The next prime is 440240159. The reversal of 440240155 is 551042044.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 440240155 - 2¹ = 440240153 is a prime.

It is a super-2 number, since 2×440240155² = 387622788148848050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (440240153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 174634 + ... + 177136.

It is an arithmetic number, because the mean of its divisors is an integer number (34198380).

Almost surely, 2^440240155 is an apocalyptic number.

440240155 is a deficient number, since it is larger than the sum of its proper divisors (106933925).

440240155 is a wasteful number, since it uses less digits than its factorization.

440240155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3750.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 440240155 is about 20981.9006527054. The cubic root of 440240155 is about 760.7288454761.

Adding to 440240155 its reverse (551042044), we get a palindrome (991282199).

The spelling of 440240155 in words is "four hundred forty million, two hundred forty thousand, one hundred fifty-five".