100440471 has 16 divisors (see below), whose sum is σ = 147965184. Its totient is φ = 60280704.

The previous prime is 100440421. The next prime is 100440497. The reversal of 100440471 is 174044001.

It is not a de Polignac number, because 100440471 - 2⁶ = 100440407 is a prime.

It is a super-3 number, since 3×100440471³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100440401) by changing a digit.

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, 41641 + ... + 43986.

It is an arithmetic number, because the mean of its divisors is an integer number (9247824).

Almost surely, 2^100440471 is an apocalyptic number.

100440471 is a deficient number, since it is larger than the sum of its proper divisors (47524713).

100440471 is a wasteful number, since it uses less digits than its factorization.

100440471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85670.

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 100440471 is about 10021.9993514268. Note that the first 3 decimals coincide. The cubic root of 100440471 is about 464.8393802983.

Adding to 100440471 its reverse (174044001), we get a palindrome (274484472).

The spelling of 100440471 in words is "one hundred million, four hundred forty thousand, four hundred seventy-one".