10400445 has 24 divisors (see below), whose sum is σ = 19667232. Its totient is φ = 5042400.

The previous prime is 10400443. The next prime is 10400449. The reversal of 10400445 is 54400401.

It is not a de Polignac number, because 10400445 - 2¹ = 10400443 is a prime.

It is a Smith number, since the sum of its digits (18) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10400443) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10011 + ... + 11000.

It is an arithmetic number, because the mean of its divisors is an integer number (819468).

Almost surely, 2^10400445 is an apocalyptic number.

10400445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10400445 is a deficient number, since it is larger than the sum of its proper divisors (9266787).

10400445 is a wasteful number, since it uses less digits than its factorization.

10400445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21033 (or 21030 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 10400445 is about 3224.9720929025. The cubic root of 10400445 is about 218.2816898360.

Adding to 10400445 its reverse (54400401), we get a palindrome (64800846).

The spelling of 10400445 in words is "ten million, four hundred thousand, four hundred forty-five".