440321145 has 32 divisors (see below), whose sum is σ = 784926720. Its totient is φ = 208943040.

The previous prime is 440321137. The next prime is 440321149. The reversal of 440321145 is 541123044.

It is not a de Polignac number, because 440321145 - 2³ = 440321137 is a prime.

It is a super-2 number, since 2×440321145² = 387765421468222050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (440321149) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20635 + ... + 36144.

It is an arithmetic number, because the mean of its divisors is an integer number (24528960).

Almost surely, 2^440321145 is an apocalyptic number.

It is an amenable number.

440321145 is a deficient number, since it is larger than the sum of its proper divisors (344605575).

440321145 is a wasteful number, since it uses less digits than its factorization.

440321145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56845.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 440321145 is about 20983.8305606960. The cubic root of 440321145 is about 760.7754924790.

Adding to 440321145 its reverse (541123044), we get a palindrome (981444189).

The spelling of 440321145 in words is "four hundred forty million, three hundred twenty-one thousand, one hundred forty-five".