100440345 has 8 divisors (see below), whose sum is σ = 160704576. Its totient is φ = 53568176.

The previous prime is 100440337. The next prime is 100440349. The reversal of 100440345 is 543044001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 100440345 - 2³ = 100440337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100440349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3347997 + ... + 3348026.

It is an arithmetic number, because the mean of its divisors is an integer number (20088072).

Almost surely, 2^100440345 is an apocalyptic number.

100440345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

100440345 is a deficient number, since it is larger than the sum of its proper divisors (60264231).

100440345 is an equidigital number, since it uses as much as digits as its factorization.

100440345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6696031.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 100440345 is about 10021.9930652540. The cubic root of 100440345 is about 464.8391859218.

Adding to 100440345 its reverse (543044001), we get a palindrome (643484346).

The spelling of 100440345 in words is "one hundred million, four hundred forty thousand, three hundred forty-five".