440234145 has 48 divisors (see below), whose sum is σ = 857525760. Its totient is φ = 207301248.

The previous prime is 440234143. The next prime is 440234147. The reversal of 440234145 is 541432044.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (440234143) and next prime (440234147).

It is not a de Polignac number, because 440234145 - 2¹ = 440234143 is a prime.

It is a super-2 number, since 2×440234145² = 387612204847762050, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (440234143) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2905 + ... + 29814.

It is an arithmetic number, because the mean of its divisors is an integer number (17865120).

Almost surely, 2^440234145 is an apocalyptic number.

440234145 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

440234145 is a deficient number, since it is larger than the sum of its proper divisors (417291615).

440234145 is a wasteful number, since it uses less digits than its factorization.

440234145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32766 (or 32763 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 440234145 is about 20981.7574335421. The cubic root of 440234145 is about 760.7253837283.

Adding to 440234145 its reverse (541432044), we get a palindrome (981666189).

The spelling of 440234145 in words is "four hundred forty million, two hundred thirty-four thousand, one hundred forty-five".